APA (7th ed.) Citation

(1921). Gypsum: Properties, definitions, and uses. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Gypsum: Properties, Definitions, and Uses. [Washington?]: U.S. Government Printing Office, 1921.

MLA (9th ed.) Citation

Gypsum: Properties, Definitions, and Uses. U.S. Government Printing Office, 1921.

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