Sohl, N. F. (1960). Archeogastropoda, Mesogastropooda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff formations. U.S. G.P.O..
Chicago Style (17th ed.) CitationSohl, Norman F. Archeogastropoda, Mesogastropooda and Stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations. Washington: U.S. G.P.O., 1960.
MLA (9th ed.) CitationSohl, Norman F. Archeogastropoda, Mesogastropooda and Stratigraphy of the Ripley, Owl Creek, and Prairie Bluff Formations. U.S. G.P.O., 1960.
Warning: These citations may not always be 100% accurate.