APA (7th ed.) Citation

Armstrong, A. K., Mamet, B. L., & Repetski, J. E. (1992). Stratigraphy of the Mississippian system, south-central Colorado and north-central New Mexico. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Armstrong, Augustus K., Bernard L. Mamet, and John E. Repetski. Stratigraphy of the Mississippian System, South-central Colorado and North-central New Mexico. [Reston, Va.]: U.S. Department of the Interior, U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Armstrong, Augustus K., et al. Stratigraphy of the Mississippian System, South-central Colorado and North-central New Mexico. U.S. Department of the Interior, U.S. Geological Survey, 1992.