APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1918). Shorter contributions to general geology 1917. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Shorter Contributions to General Geology 1917. Washington: [publisher not identified], 1918.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Shorter Contributions to General Geology 1917. [publisher not identified], 1918.

Warning: These citations may not always be 100% accurate.