Dyfyniad APA

Pepper, I. L., Gerba, C. P., & Gentry, T. J. (2015). Environmental microbiology (Third edition.). Elsevier/AP.

Dyfyniad Arddull Chicago

Pepper, Ian L., Charles P. Gerba, and Terry J. Gentry. Environmental Microbiology. Third edition. Amsterdam: Elsevier/AP, 2015.

Dyfyniad MLA

Pepper, Ian L., et al. Environmental Microbiology. Third edition. Elsevier/AP, 2015.

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