APA (7th ed.) Citation

(1925). U.S. Government master specification for low-pressure spiral gland packing. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

U.S. Government Master Specification for Low-pressure Spiral Gland Packing. [Washington?]: U.S. Government Printing Office, 1925.

MLA (9th ed.) Citation

U.S. Government Master Specification for Low-pressure Spiral Gland Packing. U.S. Government Printing Office, 1925.