APA (7th ed.) Citation

United States. Post Office Department. (1924). Postal Union transit statistics (Oct. 15-Nov. 11, inclusive, 1924). GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Postal Union Transit Statistics (Oct. 15-Nov. 11, Inclusive, 1924). [Washington]: GPO, 1924.

MLA (9th ed.) Citation

United States. Post Office Department. Postal Union Transit Statistics (Oct. 15-Nov. 11, Inclusive, 1924). GPO, 1924.

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