Achenbaum, W. A. (2001). Productive aging in historical perspective. In N. H. J. S. M. Morrow-Howell (Ed.), Productive aging: Concepts and challenges. Baltimore: The Johns Hopkins University Press.
Aquino, J. A., Russell, D. W., et al. (1996). Employment status, social support, and life satisfaction among the elderly. Journal of Counseling Psychology, 43(4), 480.
Butler, R. N., & Gleason, H. P. (1985). Productive aging: Enhancing vitality in later life. New York: Springer Publishing Company.
Butrica, B. A., Johnson, R. W., et al. (2009). Volunteer dynamics of older Americans. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 64B(5), 644–655.
Carlson, M. C., Saczynski, J. S., et al. (2008). Exploring the effects of an “everyday” activity program on executive function and memory in older adults: Experience Corps®. The Gerontologist, 48(6), 793.
Chambré, S. M. (1993). Volunteerism by elders: past trends and future prospects. The Gerontologist, 33(2), 221.
Chong, A. M. (2010). Promoting volunteerism in later life in Hong Kong. China Journal of Social Work, 3(2–3), 313–322.
Fried, L. P., Carlson, M. C., et al. (2004). A social model for health promotion for an aging population: initial evidence on the experience corps model. Journal of Urban Health, 81(1), 64–78.
Hager, M. A. (2004). Volunteer management practices and retention of volunteers.
Hayward, M. D., Hardy, M. A., et al. (1994). Work after retirement: the experiences of older men in the United States. Social Science Research, 23(1), 82–107.
Herz, D. E. (1995). Work after early retirement: an increasing trend among men. Monthly Labor Review, 118, 13–20.
Hinterlong, J., Morrow-Howell, N., et al. (2001). Productive aging: Principles and perspectives. In N. Morrow-Howell, J. Hinterlong, & M. Sherraden (Eds.), Productive aging: Concepts and challenges (pp. 3–18). Baltimore: The Johns Hopkins University Press.
Hong, S., & Morrow-Howell, N. (2010). Health outcomes of Experience Corps®: a high-commitment volunteer program. Social Science & Medicine, 71(2), 414–420.
Hong, S.-I., Morrow-Howell, N., et al. (2009). Engaging older adults in volunteering. Nonprofit and Voluntary Sector Quarterly, 38(2), 200–219.
House, J. S. (2010). Americans’ changing lives: Waves I, II, III, and IV, 1986, 1989, 1994, and 2002. Ann Arbor: Inter-university Consortium for Political and Social Research.
Juster, F. T., & Suzman R. (1995). The health and retirement study: An overview.
Kawn, A. Y. H. (Ed.). (2000). A reader on elderly volunteer services. Hong Kong: Hong Kong Christian Service.
Kuehne, V. S., & Sears, H. A. (1993). Beyond the call of duty: older volunteers committed to children and families. Journal of Applied Gerontology, 12(4), 425–438.
Lo Sasso, A. T., & Johnson, R. W. (2002). Does informal care from adult children reduce nursing home admissions for the elderly? Inquiry, 39(3), 279–297.
Lum, T. Y., & Lightfoot, E. (2005). The effects of volunteering on the physical and mental health of older people. Research on Aging, 27(1), 31–55.
Luoh, M. C., & Herzog A. R. (2002). Individual consequences of volunteer and paid work in old age: health and mortality. Journal of Health and Social Behavior, 43(4), 490–509.
McNamara, T. K., & Gonzales, E. (2011). Volunteer transitions among older adults: the role of human, social, and cultural capital in later life. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 66B(4), 490–501.
Mjelde-Mossey, L. A., & Chi, I. (2005). Gender differences in expectations predictive of volunteer experience among older Chinese professionals in Hong Kong. Journal of Ethnic and Cultural Diversity in Social Work, 13(4), 47–64.
Morrow-Howell, N. (2010). Volunteering in later life: research frontiers. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 65B(4), 461–469.
Morrow-Howell, N., Hinterlong, J., et al. (2003). Effects of volunteering on the well-being of older adults. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 58(3), S137–S145.
Morrow-Howell, N., Hinterlong, J., Sherraden, M., Rozario, P. (2001) Advancing research on productivity in later life. In N. Morrow-Howell, J. Hinterlong, M. Sherraden (Eds.), Productive aging: concepts and challenges (pp. 285–312). Baltmore, MD: The John Hopkins University Press.
Morrow-Howell, N., Hong, S.-I., et al. (2009). Who benefits from volunteering? Variations in perceived benefits. The Gerontologist, 49(1), 91–102.
Musick, M. A., Herzog, A., et al. (1999). Volunteering and mortality among older adults: findings from a national sample. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 54(3), S173.
Ozawa, M. N., & Lum, T. Y. (2005). Men who work at age 70 or older. Journal of Gerontological Social Work, 45(4), 41.
Rix, S. E. (1996). The challenge of an aging work force: keeping older workers employed and employable. Journal of Aging & Social Policy, 8(2/3), 79–96.
Rouse, S. B., & Clawson, B. (1992). Motives and incentives of older adult volunteers. Journal of Extension, 30(3), 1–9.
Schwingel, A., Niti, M. M., et al. (2009). Continued work employment and volunteerism and mental well-being of older adults: Singapore longitudinal ageing studies. Age and Ageing, 38(5), 531–537.
Sherraden, M., Morrow-Howell, N., et al. (2001). Productive aging: Theoretical choices and directions. In N. Morrow-Howell, J. Hinterlong, & M. Sherraden (Eds.), Productive aging: Concepts and challenges. Baltimore: The John Hopkins University Press.
Song, Y., Skinner, J., et al. (2010). Regional variations in diagnostic practices. The New England Journal of Medicine, 363(1), 45–53.
Tang, F., & Morrow-Howell, N. (2008). Involvement in voluntary organizations: how older adults access volunteer roles? Journal of Gerontological Social Work, 51(3–4), 210–227.
Tang, F., Morrow-Howell, N., et al. (2009). Inclusion of diverse older populations in volunteering. Nonprofit and Voluntary Sector Quarterly, 38(5), 810–827.
Tang, F., Choi, E., et al. (2010). Organizational support and volunteering benefits for older adults. The Gerontologist, 50(5), 603–612.
Wilson, J., & Musick M. (1997). Who cares? Toward an integrated theory of volunteer work. American Sociological Reviews, 62(5), 694–713.
Windsor, T. D., Anstey, K. J., et al. (2008). Volunteering and psychological well-being among young-old adults: how much is too much? The Gerontologist, 48(1), 59–70.
Wu, A. M. S., Tang, C. S. K., et al. (2005). Post-retirement voluntary work and psychological functioning among older Chinese in Hong Kong. Journal of Cross-Cultural Gerontology, 20(1), 27–45.