APA (7th ed.) Citation

Katz, S. H., & McCaa, G. S. (1929). Use of type N miners' gas mask. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Katz, S. H., and George S. McCaa. Use of Type N Miners' Gas Mask. [Washington?]: U.S. Government Printing Office, 1929.

MLA (9th ed.) Citation

Katz, S. H., and George S. McCaa. Use of Type N Miners' Gas Mask. U.S. Government Printing Office, 1929.