Cita APA (7th ed.)

Alexander, M. (1977). Introduction to soil microbiology. John Wiley & Sons.

Cita Chicago (17th ed.)

Alexander, Martin. Introduction to Soil Microbiology. New York: John Wiley & Sons, 1977.

Cita MLA (9th ed.)

Alexander, Martin. Introduction to Soil Microbiology. John Wiley & Sons, 1977.