APA (7th ed.) Citation

Marcus, B., & Forsyth, L. (2009). Motivating people to be physically active (2nd ed.). Human Kinetics.

Chicago Style (17th ed.) Citation

Marcus, Bess, and LeighAnn Forsyth. Motivating People to Be Physically Active. 2nd ed. Champaign, Ill: Human Kinetics, 2009.

MLA (9th ed.) Citation

Marcus, Bess, and LeighAnn Forsyth. Motivating People to Be Physically Active. 2nd ed. Human Kinetics, 2009.