APA (7th ed.) Citation

Clark, S. G. (1940). Geology of the Covelo district, Mendocino Co., California. University of California Press.

Chicago Style (17th ed.) Citation

Clark, Samuel Gilbert. Geology of the Covelo District, Mendocino Co., California. Berkeley, CA: University of California Press, 1940.

MLA (9th ed.) Citation

Clark, Samuel Gilbert. Geology of the Covelo District, Mendocino Co., California. University of California Press, 1940.