Cita APA (7th ed.)

Butler, R. N., Lewis, M. I., & Sunderland, T. (1998). Aging and mental health: Positive psychosocial and biomedical approaches (5th ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

Butler, Robert N., Myrna I. Lewis, i Trey Sunderland. Aging and Mental Health: Positive Psychosocial and Biomedical Approaches. 5th ed. Boston: Allyn and Bacon, 1998.

Cita MLA (9th ed.)

Butler, Robert N., et al. Aging and Mental Health: Positive Psychosocial and Biomedical Approaches. 5th ed. Allyn and Bacon, 1998.