APA (7th ed.) Citation

Welton, B. J., & Farish, R. F. (1993). The collector's guide to fossil sharks and rays from the Cretaceous of Texas. Before Time.

Chicago Style (17th ed.) Citation

Welton, Bruce J., and Roger F. Farish. The Collector's Guide to Fossil Sharks and Rays from the Cretaceous of Texas. Lewisville, Tx: Before Time, 1993.

MLA (9th ed.) Citation

Welton, Bruce J., and Roger F. Farish. The Collector's Guide to Fossil Sharks and Rays from the Cretaceous of Texas. Before Time, 1993.