APA (7th ed.) Citation

Clark, D. L. (1965). Heteromorph ammonoids from the Albian and Cenomanian of Texas and adjacent areas. Geological Society of America].

Chicago Style (17th ed.) Citation

Clark, David Leigh. Heteromorph Ammonoids from the Albian and Cenomanian of Texas and Adjacent Areas. [New York: Geological Society of America], 1965.

MLA (9th ed.) Citation

Clark, David Leigh. Heteromorph Ammonoids from the Albian and Cenomanian of Texas and Adjacent Areas. Geological Society of America], 1965.