APA (7th ed.) Citation

Wells, J. D. (1967). Geology of the Eldorado Springs quadrangle, Boulder and Jefferson counties, Colorado. United States Gov. Print. Off.

Chicago Style (17th ed.) Citation

Wells, John D. Geology of the Eldorado Springs Quadrangle, Boulder and Jefferson Counties, Colorado. Washington: United States Gov. Print. Off, 1967.

MLA (9th ed.) Citation

Wells, John D. Geology of the Eldorado Springs Quadrangle, Boulder and Jefferson Counties, Colorado. United States Gov. Print. Off, 1967.