Herrmann, H., & Wink, M. (1999). Morphological and molecular phylogenies of viperines: Conflicting evidence? Phylogeny and systematics of the Viperidae.
Chicago Style (17th ed.) CitationHerrmann, Hans-Werner, and Michael Wink. "Morphological and Molecular Phylogenies of Viperines: Conflicting Evidence?" Phylogeny and Systematics of the Viperidae 1999.
MLA (9th ed.) CitationHerrmann, Hans-Werner, and Michael Wink. "Morphological and Molecular Phylogenies of Viperines: Conflicting Evidence?" Phylogeny and Systematics of the Viperidae, 1999.
Warning: These citations may not always be 100% accurate.