APA (7th ed.) Citation

(1922). Construction and operation of 2-circuit radio receiving equipment with crystal detector. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Construction and Operation of 2-circuit Radio Receiving Equipment with Crystal Detector. [Washington?]: U.S. Government Printing Office, 1922.

MLA (9th ed.) Citation

Construction and Operation of 2-circuit Radio Receiving Equipment with Crystal Detector. U.S. Government Printing Office, 1922.