APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1927). Shorter contributions to general geology, 1926. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Shorter Contributions to General Geology, 1926. Washington: [publisher not identified], 1927.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Shorter Contributions to General Geology, 1926. [publisher not identified], 1927.

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