Butler, R. N., Lewis, M. I., & Sunderland, T. (1991). Aging and mental health: Positive psychosocial and biomedical approaches (4th ed.). Merrill/Macmillan.
Chicago Style (17. basım) AtıfButler, Robert N., Myrna I. Lewis, ve Trey Sunderland. Aging and Mental Health: Positive Psychosocial and Biomedical Approaches. 4th ed. New York: Merrill/Macmillan, 1991.
MLA (9th ed.) AtıfButler, Robert N., et al. Aging and Mental Health: Positive Psychosocial and Biomedical Approaches. 4th ed. Merrill/Macmillan, 1991.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..