APA (7th ed.) Citation

Knopf, O. (1975). Successful aging. Viking Press.

Chicago Style (17th ed.) Citation

Knopf, Olga. Successful Aging. New York: Viking Press, 1975.

MLA (9th ed.) Citation

Knopf, Olga. Successful Aging. Viking Press, 1975.

Warning: These citations may not always be 100% accurate.