APA (7th ed.) Citation

United States. Army. Air Corps. (1932). Blank forms and reports: War Department Air Corps Form No. 15, invoice. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Blank Forms and Reports: War Department Air Corps Form No. 15, Invoice. Washington: [publisher not identified], 1932.

MLA (9th ed.) Citation

United States. Army. Air Corps. Blank Forms and Reports: War Department Air Corps Form No. 15, Invoice. [publisher not identified], 1932.