Lucas, S. G., DiMichele, W. A., Krainer, K., Barrick, J. E., & Vachard, D. (2021). The Pennsylvanian system in the Sacramento mountains, New Mexico, USA: Stratigraphy, petrography, depositional systems, paleontology, biostratigraphy, and geologic history. Washington: Smithsonian Scholarly Press.

Lucas, Spencer G.,, William A. DiMichele, Karl Krainer, James E. Barrick, and Daniel Vachard. The Pennsylvanian System in the Sacramento Mountains, New Mexico, USA: Stratigraphy, Petrography, Depositional Systems, Paleontology, Biostratigraphy, and Geologic History. Washington: Smithsonian Scholarly Press, 2021.

Lucas, Spencer G.,, et al. The Pennsylvanian System in the Sacramento Mountains, New Mexico, USA: Stratigraphy, Petrography, Depositional Systems, Paleontology, Biostratigraphy, and Geologic History. Washington: Smithsonian Scholarly Press, 2021.