Cita APA

Alexander, M. (1977). Introduction to soil microbiology (2. ed.). New York: Willey.

Citación estilo Chicago

Alexander, Martin. Introduction to Soil Microbiology. 2. ed. New York: Willey, 1977.

Cita MLA

Alexander, Martin. Introduction to Soil Microbiology. 2. ed. New York: Willey, 1977.