Cita APA (7a ed.)

Coppin, C. A., & High, J. C. (1999). The Politics of Purity: Harvey Washington Wiley and the Origins of Federal Food Policy. Univeristy of Michigan Press.

Cita Chicago Style (17a ed.)

Coppin, Clayton A., y Jack C. High. The Politics of Purity: Harvey Washington Wiley and the Origins of Federal Food Policy. Ann Arbor: Univeristy of Michigan Press, 1999.

Cita MLA (8a ed.)

Coppin, Clayton A., y Jack C. High. The Politics of Purity: Harvey Washington Wiley and the Origins of Federal Food Policy. Univeristy of Michigan Press, 1999.