Procambarus (Girardiella) hagenianus hagenianusKeith A. Crandall, James W. Fetzner, Jr., and Horton H. Hobbs, Jr.
Faxon, Walter. 1884. Descriptions of New Species of Cambarus, to Which is Added a Synonymical List of the Known Species of Cambarus and Astacus. Proceedings of the American Academy of Arts and Sciences, 20: 107-158.
Fitzpatrick, Joseph F., Jr. 1978. Systematics of the Crawfishes of the Hagenianus Group of the Genus Procambarus, Subgenus Girardiella (Decapoda, Cambaridae). Tulane Studies in Zoology and Botany, 20(3-4): 57-97, figures 1-121.
Hobbs, H. H. Jr. 1989. An Illustrated Checklist of the American Crayfishes (Decapoda: Astacidae, Cambaridae, and Parastacidae). Smithsonian Institution Press.
Keith A. Crandall
Brigham Young University, Provo, Utah, USA
James W. Fetzner, Jr.
Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA
Horton H. Hobbs, Jr.
Wittenberg University, Springfield, Ohio, USA
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Crandall, Keith A., James W. Fetzner, Jr., and Horton H. Hobbs, Jr. 2001. Procambarus (Girardiella) hagenianus hagenianus http://tolweb.org/Procambarus_%28Girardiella%29_hagenianus_hagenianus/7426/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/. Version 01 January 2001 (under construction).