APA (7th ed.) Citation

Paffenbarger, R. S., & Olsen, E. (1996). Lifefit: An effective exercise program for optimal health and a longer life. Human Kinectics.

Chicago Style (17th ed.) Citation

Paffenbarger, Ralph S., and Eric Olsen. Lifefit: An Effective Exercise Program for Optimal Health and a Longer Life. Champaign, IL: Human Kinectics, 1996.

MLA (9th ed.) Citation

Paffenbarger, Ralph S., and Eric Olsen. Lifefit: An Effective Exercise Program for Optimal Health and a Longer Life. Human Kinectics, 1996.