Gaya APA

Tortora, G, J. et al (2007). Microbiology : an introduction / 9th edition (9th ed.). : Pearson Benjamin Cummings.

Gaya MLA

Tortora, Gerard, J.. et al. "Microbiology : an introduction / 9th edition". 9th ed. : Pearson Benjamin Cummings, 2007. Text.