The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky

MLA

Walker, Laurence G., Geological Survey (U.S.) and Kentucky Geological Survey. The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky. Washington : United States Department of the Interior, Geological Survey, 1982.

APA

Walker, L., Geological Survey (U.S.) & Kentucky Geological Survey. (1982). The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky. Washington : United States Department of the Interior, Geological Survey.

Chicago

Walker, Laurence G., Geological Survey (U.S.) and Kentucky Geological Survey. The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky. Washington : United States Department of the Interior, Geological Survey, 1982.