APA (7th ed.) Citation

Ratkevich, R. P. (1979). Field guide to Arizona fossils. Dinograph Southwest.

Chicago Style (17th ed.) Citation

Ratkevich, Ronald Paul. Field Guide to Arizona Fossils. Alamogordo, New Mexico: Dinograph Southwest, 1979.

MLA (9th ed.) Citation

Ratkevich, Ronald Paul. Field Guide to Arizona Fossils. Dinograph Southwest, 1979.

Warning: These citations may not always be 100% accurate.