APA-viite

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.

Chicago-tyylinen lähdeviittaus

Varela-Romero, Alejandro, Terry L. Myers, Jeff Sorensen, ja 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-viite

Varela-Romero, Alejandro, Terry L. Myers, Jeff Sorensen, ja 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.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.