APA (7th ed.) Citation

(1924). U.S. Government specification for asphalt-saturated rag felt for roofing and waterproofing. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

U.S. Government Specification for Asphalt-saturated Rag Felt for Roofing and Waterproofing. [Washington?]: U.S. Government Printing Office, 1924.

MLA (9th ed.) Citation

U.S. Government Specification for Asphalt-saturated Rag Felt for Roofing and Waterproofing. U.S. Government Printing Office, 1924.