Cita APA (7th ed.)

Paul, E. (1989). Soil microbiology and biochemistry.: E.A. Paul, F.E. Clark. Calif academic Pr.

Cita Chicago (17th ed.)

Paul, E.A. Soil Microbiology and Biochemistry.: E.A. Paul, F.E. Clark. San Diego: Calif academic Pr, 1989.

Cita MLA (9th ed.)

Paul, E.A. Soil Microbiology and Biochemistry.: E.A. Paul, F.E. Clark. Calif academic Pr, 1989.