APA (7th ed.) Citation

Braddock, W. A. (1969). Geology of the Empire quadrangle: Grand, Gilpin, and Clear Creek Counties, Colorado. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Braddock, William A. Geology of the Empire Quadrangle: Grand, Gilpin, and Clear Creek Counties, Colorado. Washington: U.S. Govt. Print. Off, 1969.

MLA (9th ed.) Citation

Braddock, William A. Geology of the Empire Quadrangle: Grand, Gilpin, and Clear Creek Counties, Colorado. U.S. Govt. Print. Off, 1969.