Krueger, R. G. (1971). Introduction to microbiology. Macmillan.
Chicago Style aipamenaKrueger, Robert G. Introduction to Microbiology. New york: Macmillan, 1971.
MLA aipamenaKrueger, Robert G. Introduction to Microbiology. Macmillan, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.