APA (7th ed.) Citation

Orkild, P. P. (1955). Photogeologic map of the Tidwell-16 quadrangle, Emery and Grand Counties, Utah. U.S. Geoogical Survey.

Chicago Style (17th ed.) Citation

Orkild, Paul P. Photogeologic Map of the Tidwell-16 Quadrangle, Emery and Grand Counties, Utah. Washington, D.C.: U.S. Geoogical Survey, 1955.

MLA (9th ed.) Citation

Orkild, Paul P. Photogeologic Map of the Tidwell-16 Quadrangle, Emery and Grand Counties, Utah. U.S. Geoogical Survey, 1955.