APA (7th ed.) Citation

United States. Army. Air Corps. (1918). Notes on subject of field glasses. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Notes on Subject of Field Glasses. [Place of publication not identified]: [publisher not identified], 1918.

MLA (9th ed.) Citation

United States. Army. Air Corps. Notes on Subject of Field Glasses. [publisher not identified], 1918.