APA (7th ed.) Citation

Longwell, C. R. (1923). Rock formations in the Colorado Plateau of southeastern Utah and northern Arizona. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Longwell, Chester R. Rock Formations in the Colorado Plateau of Southeastern Utah and Northern Arizona. Washington, D.C.: U.S. G.P.O., 1923.

MLA (9th ed.) Citation

Longwell, Chester R. Rock Formations in the Colorado Plateau of Southeastern Utah and Northern Arizona. U.S. G.P.O., 1923.