(em inglês) Henry A. Pilsbry und C. Montague Cooke: Manual of Conchology. Structural and Systematic. Band XXII. Achatinellidae. Conchological Department, Philadelphia, 1912-1914
(em inglês) E. W. Thwing, Henry A. Pilsbry und C. Montague Cooke: Occasional papers of Bernice P. Bishop Museum (1907-1917). Bernice P. Bishop Museum