APA (7th ed.) Citation

De Vries, H. A. (1987). Fitness after 50 (3rd ed.). Scribners.

Chicago Style (17th ed.) Citation

De Vries, Herbert A. Fitness After 50. 3rd ed. New York: Scribners, 1987.

MLA (9th ed.) Citation

De Vries, Herbert A. Fitness After 50. 3rd ed. Scribners, 1987.