APA (7th ed.) Citation

United States. Post Office Department. (1923). Importance of proper address labels on shipments of motion-picture films. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Post Office Department. Importance of Proper Address Labels on Shipments of Motion-picture Films. [Washington]: [publisher not identified], 1923.

MLA (9th ed.) Citation

United States. Post Office Department. Importance of Proper Address Labels on Shipments of Motion-picture Films. [publisher not identified], 1923.