Geological Survey (U.S.) & ProQuest (Firm). (1917). Professional Paper 93. Geology of the Navajo Country. A reconnaissance of parts of Arizona, New Mexico, and Utah. [publisher not identified].
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Professional Paper 93. Geology of the Navajo Country. A Reconnaissance of Parts of Arizona, New Mexico, and Utah. Washington: [publisher not identified], 1917.
MLA (9th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Professional Paper 93. Geology of the Navajo Country. A Reconnaissance of Parts of Arizona, New Mexico, and Utah. [publisher not identified], 1917.
Warning: These citations may not always be 100% accurate.