APA (7th ed.) Citation

Gerba, C. P., Maier, R. M., & Pepper, I. L. (2009). Environmental microbiology (2nd ed.). Elsevier.

Chicago Style (17th ed.) Citation

Gerba, Charles P., Raina M. Maier, and Ian L. Pepper. Environmental Microbiology. 2nd ed. Amsterdam: Elsevier, 2009.

MLA (9th ed.) Citation

Gerba, Charles P., et al. Environmental Microbiology. 2nd ed. Elsevier, 2009.