Pilsbry, H. A. & Ferriss, J. H. (1909). Mollusca of the southwestern states, III: The Huachuca Mountains, Arizona. Proceedings of the Academy of Natural Sciences of Philadelphia. 61 (3): 495-516, plates 19-22.
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Pilsbry, H. A. & Ferriss, J. H.
1909
Mollusca of the southwestern states, III: The Huachuca Mountains, Arizona.
Proceedings of the Academy of Natural Sciences of Philadelphia