Butler, R. N., Lewis, M. I., & Sunderland, T. (1991). Aging and mental health: Positive psychosocial and biomedical approaches (Fourth edition.). Macmillan Publishing Company.
Chicago Style (17th ed.) CitationButler, Robert N., Myrna I. Lewis, and Trey Sunderland. Aging and Mental Health: Positive Psychosocial and Biomedical Approaches. Fourth edition. New York: Macmillan Publishing Company, 1991.
MLA (9th ed.) CitationButler, Robert N., et al. Aging and Mental Health: Positive Psychosocial and Biomedical Approaches. Fourth edition. Macmillan Publishing Company, 1991.
Warning: These citations may not always be 100% accurate.