Cita APA (7th ed.)

Leon, W., Jacobson, M. F., & DeWaal, C. S. (2002). Is our food safe?: A consumer's guide to protecting your health and the environment. Three Rivers Press.

Cita Chicago (17th ed.)

Leon, Warren, Michael F. Jacobson, i Caroline Smith DeWaal. Is Our Food Safe?: A Consumer's Guide to Protecting Your Health and the Environment. New York: Three Rivers Press, 2002.

Cita MLA (8th ed.)

Leon, Warren, et al. Is Our Food Safe?: A Consumer's Guide to Protecting Your Health and the Environment. Three Rivers Press, 2002.