^Pilsbry H. A. (1896). "A New Species of Pomatiopsis". The Nautilus10(4): 37-38.
^Baker F. C. (1927). "Descriptions of new forms of Pleistocene land mollusks from Illinois with remarks on other species". The Nautilus40(4): 114-120. page 120.
^Dundee D. S. (1957). "Aspects of the biology of Pomatiopsis lapidaria (Say) (Mollusca: Gastropoda: Prosobranchia)". Miscellaneous Publications100: 65 pp., 14 plates, 1 figure, 2 maps, 8 tables. PDF.
External links
Walker B. (1918). "A synopsis of the classification of the freshwater Mollusca of North America, north of Mexico, and a catalogue of the more recently described species, with notes". Miscellaneous Publications6: 214 pp., 1 plate, 233 figures. [page 34.