Gaya APA

microbiology. (1923). New York: [s.n.].

Gaya Chicago

microbiology. 1. New York: [s.n.], 1923. Text.

Gaya MLA

microbiology. 1. New York: [s.n.], 1923. Text.

Gaya Turabian

microbiology. New York: [s.n.], 1923. Print.