APA (7th ed.) Citation

United States. Department of Commerce. (1920). Structure in Paleozoic bituminous coals. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Commerce. Structure in Paleozoic Bituminous Coals. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

United States. Department of Commerce. Structure in Paleozoic Bituminous Coals. GPO, 1920.

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