APA (7th ed.) Citation

Finsley, C. (1989). A field guide to fossils of Texas. Texas Monthly Press.

Chicago Style (17th ed.) Citation

Finsley, Charles. A Field Guide to Fossils of Texas. Austin, Tex.: Texas Monthly Press, 1989.

MLA (9th ed.) Citation

Finsley, Charles. A Field Guide to Fossils of Texas. Texas Monthly Press, 1989.