Kier, P. M. (1952). Echinoderms of the Middle Devonian Silica formation of Ohio. University of Michigan Press.
Chicago Style (17th ed.) CitationKier, Porter M. Echinoderms of the Middle Devonian Silica Formation of Ohio. Ann Arbor: University of Michigan Press, 1952.
MLA (9th ed.) CitationKier, Porter M. Echinoderms of the Middle Devonian Silica Formation of Ohio. University of Michigan Press, 1952.
Warning: These citations may not always be 100% accurate.