Blanco, Juan Felipe, Silvana Tamayo, and Frederick N. Scatena. 2014. “Phenotypic Variability of the Shell in Neritinidae (Gastropoda: Neritimorpha) in Puerto Rican Rivers”. Revista De Biología Tropical 62 (S2):52–68. https://doi.org/10.15517/rbt.v62i0.15778.