References
- van Gennep A: The Rites of Passage. Translated by Vizedom NB, Caffee GL. London: Routledge and Kegan Paul, 1960.
- Turner V: The Ritual Process. London: Routledge and Kegan Paul, 1969.
- Green R: Old age. In Case RM, ed: Variations of Human Physiology. Manchester: Manchester University Press, 1985.
- Butler RN: Health, productivity, and aging: an overview. In Butler RN, Gleason HP, eds: Productive Aging: Enhancing Vitality in Later Life. New York: Springer, 1985: 1.
- Rowe JW, Kahn RL: Human aging: usual and successful. Science 1987; 237: 143–149.
- Kenney R: Biology of Aging. Chicago: Yearbook Medical Publishers, Inc., 1982: 26.
- Fries JF: Aging Well. Reading, Mass.: Addison-Wesley Publishing Co., Inc, 1989.
- Atchley RC: Aging: Continuity and Change, 2nd ed. Belmont, Calif.: Wadsworth, 1987.
- Holmes TH, Rahe RH: The social readjustment rating scale. J Psychosom Res 1967; 11: 213–218.
- Neugarten B: Age grouping in American society and the rise of the young old. Annals of the American Academy of Political and Social Science 1974; 415: 181–199.
- Anderson BG: The Aging Game: Success, Sanity and Sex after Sixty. New York: McGraw-Hill, 1979.
- Free MM: The Private World of the Hermitage: Lifestyles of the Rich and Old in an Elite Retirement Home. Westport, Conn: Bergin and Garvey, 1995.