APA (7th ed.) Citation

Gypsum in .. U.S. Department of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Gypsum in .. Washington, D.C.: U.S. Department of the Interior, Bureau of Mines.

MLA (9th ed.) Citation

Gypsum in .. U.S. Department of the Interior, Bureau of Mines.

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