APA (7th ed.) Citation

Walker, L. G., & Pojeta, J., Jr. (1982). The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky: A taxonomic study of nine species and their stratigraphic distribution in the Lexington limestone and younger Ordovician rocks. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Walker, Laurence G., and John Pojeta, Jr. The Brachiopod Genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky: A Taxonomic Study of Nine Species and Their Stratigraphic Distribution in the Lexington Limestone and Younger Ordovician Rocks. Washington: U.S. G.P.O., 1982.

MLA (9th ed.) Citation

Walker, Laurence G., and John Pojeta, Jr. The Brachiopod Genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky: A Taxonomic Study of Nine Species and Their Stratigraphic Distribution in the Lexington Limestone and Younger Ordovician Rocks. U.S. G.P.O., 1982.