APA (7th ed.) Citation

Root, F. K. (1977). Minerals and rocks of Wyoming (Rev. 1976 [i.e. 1977].). Geological Survey of Wyoming.

Chicago Style (17th ed.) Citation

Root, Forrest K. Minerals and Rocks of Wyoming. Rev. 1976 [i.e. 1977]. Laramie: Geological Survey of Wyoming, 1977.

MLA (9th ed.) Citation

Root, Forrest K. Minerals and Rocks of Wyoming. Rev. 1976 [i.e. 1977]. Geological Survey of Wyoming, 1977.