APA (7th ed.) Citation

(1922). U.S. Government specification for soap powder. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

U.S. Government Specification for Soap Powder. [Washington?]: U.S. Government Printing Office, 1922.

MLA (9th ed.) Citation

U.S. Government Specification for Soap Powder. U.S. Government Printing Office, 1922.

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