APA Citation

Cooke, C. W. n. 1., & Cooke, C. W. n. 1. (1961). Cenozoic and cretaceous echinoids from Trinidad and Venezuela. Washington.

Chicago Style Citation

Cooke, Charles Wythe n. 1887, and Charles Wythe n. 1887 Cooke. Cenozoic and Cretaceous Echinoids From Trinidad and Venezuela. Washington, 1961.

MLA Citation

Cooke, Charles Wythe n. 1887, and Charles Wythe n. 1887 Cooke. Cenozoic and Cretaceous Echinoids From Trinidad and Venezuela. Washington, 1961.

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