APA (7th ed.) Citation

United States. Army. Air Corps. (1924). Pittsburgh, Pa., to Cumberland, Md. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Pittsburgh, Pa., to Cumberland, Md. Washington: [publisher not identified], 1924.

MLA (9th ed.) Citation

United States. Army. Air Corps. Pittsburgh, Pa., to Cumberland, Md. [publisher not identified], 1924.

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