APA (7th ed.) Citation

Hayes, P. T., & Koogle, R. L. (1959). Geology of the Carlsbad Caverns West quadrangle, New Mexico-Texas. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hayes, Philip T., and R. L. Koogle. Geology of the Carlsbad Caverns West Quadrangle, New Mexico-Texas. Washington: U.S. Geological Survey, 1959.

MLA (9th ed.) Citation

Hayes, Philip T., and R. L. Koogle. Geology of the Carlsbad Caverns West Quadrangle, New Mexico-Texas. U.S. Geological Survey, 1959.