Johnson, S. Y., Chan, M. A., & Konopka, E. A. (1992). Pennsylvanian and Early Permian paleogeography of the Uinta-Piceance Basin region, northwestern Colorado and northeastern Utah. United States Gov. Print. Off.
Chicago Style (17th ed.) CitationJohnson, Samuel Y., Marjorie A. Chan, and Edith A. Konopka. Pennsylvanian and Early Permian Paleogeography of the Uinta-Piceance Basin Region, Northwestern Colorado and Northeastern Utah. [Washington, DC]: United States Gov. Print. Off, 1992.
MLA (9th ed.) CitationJohnson, Samuel Y., et al. Pennsylvanian and Early Permian Paleogeography of the Uinta-Piceance Basin Region, Northwestern Colorado and Northeastern Utah. United States Gov. Print. Off, 1992.
Warning: These citations may not always be 100% accurate.