Cita APA (7a ed.)

Hatfield, J. L., & Follett, R. F. (2008). Nitrogen in the environment: Sources, problems, and management (2nd ed., rev. ed.). Academic Press/Elsevier.

Cita Chicago Style (17a ed.)

Hatfield, Jerry L., y R. F. Follett. Nitrogen in the Environment: Sources, Problems, and Management. 2nd ed., rev. ed. Amsterdam ; Boston: Academic Press/Elsevier, 2008.

Cita MLA (8a ed.)

Hatfield, Jerry L., y R. F. Follett. Nitrogen in the Environment: Sources, Problems, and Management. 2nd ed., rev. ed. Academic Press/Elsevier, 2008.