APA (7th ed.) Zitazioa

Warren, C. E. (1971). Biology and water pollution control. W. B Saunders.

Chicago Style (17th ed.) Zitazioa

Warren, Charles E. Biology and Water Pollution Control. Filadelfia: W. B Saunders, 1971.

MLA (9th ed.) Zitazioa

Warren, Charles E. Biology and Water Pollution Control. W. B Saunders, 1971.