APA (7th ed.) Citation

Geological Survey (U.S.). (1933). Shorter contributions to general geology, 1932�?33. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Shorter Contributions to General Geology, 1932�?33. [Washington]: [s.n.], 1933.

MLA (9th ed.) Citation

Geological Survey (U.S.). Shorter Contributions to General Geology, 1932�?33. [s.n.], 1933.

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