APA (7th ed.) Citation

(1925). U.S. Government master specification for powdered soap (for laundry use). U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

U.S. Government Master Specification for Powdered Soap (for Laundry Use). [Washington?]: U.S. Government Printing Office, 1925.

MLA (9th ed.) Citation

U.S. Government Master Specification for Powdered Soap (for Laundry Use). U.S. Government Printing Office, 1925.