APA (7th ed.) Citation

(1920). Specifications for manufacture and installation of railroad track scales. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Specifications for Manufacture and Installation of Railroad Track Scales. [Washington?]: U.S. Government Printing Office, 1920.

MLA (9th ed.) Citation

Specifications for Manufacture and Installation of Railroad Track Scales. U.S. Government Printing Office, 1920.

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