APA (7th ed.) Citation

United States. Government Printing Office. (1939). Tentative condensed classification of printing industry techniques. [s.n.].

Chicago Style (17th ed.) Citation

United States. Government Printing Office. Tentative Condensed Classification of Printing Industry Techniques. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Government Printing Office. Tentative Condensed Classification of Printing Industry Techniques. [s.n.], 1939.

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