APA (7th ed.) Citation

Geological Survey (U.S.). (1938). Lower Pliocene mollusks and echinoids from Los Angeles Basin, California. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Lower Pliocene Mollusks and Echinoids from Los Angeles Basin, California. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

Geological Survey (U.S.). Lower Pliocene Mollusks and Echinoids from Los Angeles Basin, California. [s.n.], 1938.