Pepper, I. L. (2005). Environmental microbiology (2nd ed.). Elsevier Inc.
Lua i Stíl Chicago (17ú heag.)Pepper, Ian L. Environmental Microbiology. 2nd ed. Burlington, MA: Elsevier Inc, 2005.
Lua MLA (9ú heag.)Pepper, Ian L. Environmental Microbiology. 2nd ed. Elsevier Inc, 2005.
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