APA (7th ed.) Citation

Olsen, O. W. (1974). Animal parasites: Their life cycles and ecology (Third edition.). University Park Press.

Chicago Style (17th ed.) Citation

Olsen, O. Wilford. Animal Parasites: Their Life Cycles and Ecology. Third edition. Baltimore: University Park Press, 1974.

MLA (9th ed.) Citation

Olsen, O. Wilford. Animal Parasites: Their Life Cycles and Ecology. Third edition. University Park Press, 1974.