APA (7th ed.) Citation

Richmond, J. F., & Gray, C. H. (1960). Geology of the San Bernardino Mountains, north of Big Bear Lake, California.

Chicago Style (17th ed.) Citation

Richmond, James Frank, and Cliffton H. Gray. Geology of the San Bernardino Mountains, North of Big Bear Lake, California. San Francisco, Calif, 1960.

MLA (9th ed.) Citation

Richmond, James Frank, and Cliffton H. Gray. Geology of the San Bernardino Mountains, North of Big Bear Lake, California. 1960.