Duellman, W. E. A Review of the Middle American Tree Frogs of the Genus Ptychohyla.
Chicago Style (17th ed.) CitationDuellman, William Edward. A Review of the Middle American Tree Frogs of the Genus Ptychohyla.
MLA (9th ed.) CitationDuellman, William Edward. A Review of the Middle American Tree Frogs of the Genus Ptychohyla.
Warning: These citations may not always be 100% accurate.