APA (7th ed.) Citation

Varnam, A. H., & Evans, M. G. (2000). Environmental microbiology. ASM Press.

Chicago Style (17th ed.) Citation

Varnam, A. H., and M. G. Evans. Environmental Microbiology. Washington, D.C.: ASM Press, 2000.

MLA (8th ed.) Citation

Varnam, A. H., and M. G. Evans. Environmental Microbiology. ASM Press, 2000.