APA (7th ed.) Citation

Rigby, J. K., Hintze, L. F., & Welsh, S. L. (1974). Geologic guide to the northwestern Colorado Plateau. Dept. of Geology, Brigham Young University.

Chicago Style (17th ed.) Citation

Rigby, J. Keith, Lehi F. Hintze, and Stanley L. Welsh. Geologic Guide to the Northwestern Colorado Plateau. Provo, Utah: Dept. of Geology, Brigham Young University, 1974.

MLA (9th ed.) Citation

Rigby, J. Keith, et al. Geologic Guide to the Northwestern Colorado Plateau. Dept. of Geology, Brigham Young University, 1974.