Citazione Stile APA (7a Edizione)

Butler, R. N. (1977). Aging and mental health: Positive psycho-social approaches (2nd ed.). Mosby.

Citazione stile Chigago Style (17a edizione)

Butler, Robert N. Aging and Mental Health: Positive Psycho-social Approaches. 2nd ed. Saint Louis: Mosby, 1977.

Citatione MLA (9a ed.)

Butler, Robert N. Aging and Mental Health: Positive Psycho-social Approaches. 2nd ed. Mosby, 1977.