MLA

Watson, Ronald, et al. Chocolate In Health and Nutrition. Humana Press, 2013.

APA

Watson, R., Preedy, V. R, Watson, R. Ross, & Zibadi, S. (2013). Chocolate in Health and Nutrition. Humana Press.

Chicago

Watson, Ronald, Victor R Preedy, Ronald Ross Watson, and Sherma Zibadi. Chocolate In Health and Nutrition. : Humana Press, 2013.