APA (7th ed.) Citation

Yerkes, R. F., & Campbell, R. H. (1980). Geologic map of east-central Santa Monica Mountains, Los Angeles County, California. The Survey.

Chicago Style (17th ed.) Citation

Yerkes, R. F., and Russell H. Campbell. Geologic Map of East-central Santa Monica Mountains, Los Angeles County, California. Reston, Va.: The Survey, 1980.

MLA (9th ed.) Citation

Yerkes, R. F., and Russell H. Campbell. Geologic Map of East-central Santa Monica Mountains, Los Angeles County, California. The Survey, 1980.