Varela-Romero, A., Myers, T. L., Sorensen, J., & Abarca, F. (2013). TAXONOMIC STATUS AND PHYLOGENY OF THE SAN BERNARDINO SPRING SNAIL POPULATIONS INTO THE GENUS PYRGULOPSIS IN SONORA AND ARIZONA. Universidad de Sonora.
Čikaški stil citiranjaVarela-Romero, Alejandro, Terry L. Myers, Jeff Sorensen, i Francisco Abarca. TAXONOMIC STATUS AND PHYLOGENY OF THE SAN BERNARDINO SPRING SNAIL POPULATIONS INTO THE GENUS PYRGULOPSIS IN SONORA AND ARIZONA. Universidad de Sonora, 2013.
MLA način citiranjaVarela-Romero, Alejandro, Terry L. Myers, Jeff Sorensen, i Francisco Abarca. TAXONOMIC STATUS AND PHYLOGENY OF THE SAN BERNARDINO SPRING SNAIL POPULATIONS INTO THE GENUS PYRGULOPSIS IN SONORA AND ARIZONA. Universidad de Sonora, 2013.
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