MLA

Aspray, William F, George Royer, and Melissa G Ocepek. Formal and Informal Approaches to Food Policy. Springer International Publishing, 2014.

APA

Aspray, W. F, Royer, G., & Ocepek, M. G. (2014). Formal and Informal Approaches to Food Policy. Springer International Publishing.

Chicago

Aspray, William F., George Royer, and Melissa G Ocepek. Formal and Informal Approaches to Food Policy. : Springer International Publishing, 2014.