Cita APA (7a ed.)

United States. Environmental Protection Agency, University of California, Riverside, Ohio State University, Page, A. L., Logan, T. J., & Ryan, J. A. (1987). Land application of sludge: Food chain implications. Lewis.

Cita Chicago Style (17a ed.)

United States. Environmental Protection Agency, Riverside University of California, Ohio State University, A. L. Page, Terry J. Logan, y James A. Ryan. Land Application of Sludge: Food Chain Implications. Chelsea, Mich.: Lewis, 1987.

Cita MLA (8a ed.)

United States. Environmental Protection Agency, et al. Land Application of Sludge: Food Chain Implications. Lewis, 1987.