Cita APA

Nielsen, D. R., & MacDonald, J. (1978). Nitrogen in the environment. Academic press.

Citación estilo Chicago

Nielsen, Donald R., and J.G MacDonald. Nitrogen in the Environment. New York: Academic press, 1978.

Cita MLA

Nielsen, Donald R., and J.G MacDonald. Nitrogen in the Environment. New York: Academic press, 1978.