APA (7th ed.) Citation

United States. Army. Air Corps. (1920). Report on interphone, type SCR-57, remodeled. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Report on Interphone, Type SCR-57, Remodeled. Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Army. Air Corps. Report on Interphone, Type SCR-57, Remodeled. U.S. GPO, 1920.

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