APA (7th ed.) Citation

(1923). Description and operation of audio-frequency amplifier unit for simple radio receiving outfits. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Description and Operation of Audio-frequency Amplifier Unit for Simple Radio Receiving Outfits. [Washington?]: U.S. Government Printing Office, 1923.

MLA (9th ed.) Citation

Description and Operation of Audio-frequency Amplifier Unit for Simple Radio Receiving Outfits. U.S. Government Printing Office, 1923.