APA (7th ed.) Citation

Wright, V., & Winter, R. (2009). Fitness after 40: How to stay strong at any age. AMACOM.

Chicago Style (17th ed.) Citation

Wright, Vonda, and Ruth Winter. Fitness After 40: How to Stay Strong at Any Age. New York: AMACOM, 2009.

MLA (9th ed.) Citation

Wright, Vonda, and Ruth Winter. Fitness After 40: How to Stay Strong at Any Age. AMACOM, 2009.

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