Cita APA (7a ed.)

American Geophysical Union. (1987). Global biogeochemical cycles. American Geophysical Union.

Cita Chicago Style (17a ed.)

American Geophysical Union. Global Biogeochemical Cycles. Washington, DC: American Geophysical Union, 1987.

Cita MLA (9a ed.)

American Geophysical Union. Global Biogeochemical Cycles. American Geophysical Union, 1987.