William E. Duellman, L. T. Biology of amphibians. McGraw-Hill.
Chicago Style (17th ed.) CitationWilliam E. Duellman, Linda Trueb. Biology of Amphibians. McGraw-Hill.
MLA (8th ed.) CitationWilliam E. Duellman, Linda Trueb. Biology of Amphibians. McGraw-Hill.
Warning: These citations may not always be 100% accurate.