Coppin, C. A., & High, J. C. (1999). The politics of purity: Harvey Washington Wiley and the origins of Federal food policy. The University of Michigan Press.
Chicago-Zitierstil (17. Ausg.)Coppin, Clayton A., und Jack C. High. The Politics of Purity: Harvey Washington Wiley and the Origins of Federal Food Policy. Ann Arbor: The University of Michigan Press, 1999.
MLA-Zitierstil (9. Ausg.)Coppin, Clayton A., und Jack C. High. The Politics of Purity: Harvey Washington Wiley and the Origins of Federal Food Policy. The University of Michigan Press, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.