Gaya APA

R.Krieg, N. (1977). Microbiology : Study Guide to Accompany Pelczar, Chan and Krieg . New York: Mc Graw.

Gaya MLA

R.Krieg, Noel. "Microbiology : Study Guide to Accompany Pelczar, Chan and Krieg". New York: Mc Graw, 1977. Text.