◆ Bateson,M. C. (2010). Composing a Further Life : The Age of Active Wisdom . New York:Alfred A. Knopf.
◆ Blanchflower,D. G.,& Oswald,A. J. (2008). Is well-being U-shaped over the life cycle? Soc Sci Med , 66 (8),1733-1749. doi:10. 1016/j.socscimed. 2008. 01. 030.
◆ Bok,S. (1995). Common Values . Columbia,Mo. :University of Missouri Press.
◆ Economist . (2010). The U-bend of life:Why,beyond middle age,people get happier as they get older. The Economist ,33-36.
◆ Hillman,J. (2000). The Force of Character and the Lasting Life . New York:Ballantine Books.
◆ Kaufman,S. R. (1986). The Ageless Self : Sources and Meaning in Late Life . Madison,Wis. :University of Wiconsin Press.
◆ Levy,B. R.,Zonderman,A. B.,Slade,M. D.,& Ferrucci,L. (2009).Age stereotypes held earlier in life predict cardiovascular events in later life. Psychol Sci , 20 (3),296-298. doi:10. 1111/j. 1467-9280. 2009.02298. x
◆ Orr,M. (2010,December 15,2010). Last Word:Bob Feller. The New York Times . Retrieved from http://www. nytimes. com/video/obituaries/1247464008751/last-word-bob-feller. html
◆ Peterson,C.,& Seligman,M. (2004). Character Strengths and Virtues : Handbook and Classification :New York/Washington,D. C. :American Psychological Association/Oxford University Press.
◆ Sneed,J. R.,& Whitbourne,S. K. (2005). Models of the aging self. J Soc Issues , 61 (2),375-388.
◆ Stone,A. A.,Schwartz,J. E.,Broderick,J. E.,& Deaton,A. (2010).A snapshot of the age distribution of psychological well-being in the United States. Proc Natl Acad Sci U S A 107 (22),9985-9990. doi:10.1073/pnas. 1003744107