Grzimek, B. (1990). Grzimek's encyclopedia of mammals (English language edition.). McGraw-Hill.
Chicago Style (17th ed.) CitationGrzimek, Bernhard. Grzimek's Encyclopedia of Mammals. English language edition. New York: McGraw-Hill, 1990.
MLA (9th ed.) CitationGrzimek, Bernhard. Grzimek's Encyclopedia of Mammals. English language edition. McGraw-Hill, 1990.
Warning: These citations may not always be 100% accurate.