Παραπομπή APA

Walter, W. G. (1973). Introduction to microbiology. Van Nostrand Reinhold Company.

Παραπομπή Chicago Style

Walter, William G. Introduction to Microbiology. New York: Van Nostrand Reinhold Company, 1973.

Παραπομπή MLA

Walter, William G. Introduction to Microbiology. Van Nostrand Reinhold Company, 1973.