APA (7th ed.) Citation

LaLanne, E., & Benyo, R. (1989). Fitness after 50 workout. S. Greene Press/Pelham Books ; Distributed by Viking Penguin.

Chicago Style (17th ed.) Citation

LaLanne, Elaine, and Richard Benyo. Fitness After 50 Workout. [Lexington, MA] : New York, N.Y., U.S.A.: S. Greene Press/Pelham Books ; Distributed by Viking Penguin, 1989.

MLA (8th ed.) Citation

LaLanne, Elaine, and Richard Benyo. Fitness After 50 Workout. S. Greene Press/Pelham Books ; Distributed by Viking Penguin, 1989.