APA Edition Citation

Chaplin, A. E., & Gallon, J. R. (1987). An Introduction to nitrogen fixation.

Chicago Edition Citation

Chaplin, Alan E., and John R. Gallon. An Introduction to Nitrogen Fixation. London, Cassell, 1987.

MLA Edition Citation

Chaplin, Alan E., and John R. Gallon. An Introduction to Nitrogen Fixation. 1987.