Dyfyniad APA

Alexander, M. (1977). Introduction to soil microbiology (2d ed.). Wiley.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

Alexander, Martin. Introduction to Soil Microbiology. 2d ed. Wiley, 1977.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.