APA (7th ed.) Citation

United States. Post Office Department. (1929). Improper acceptance of matter without postage stamps affixed. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Improper Acceptance of Matter Without Postage Stamps Affixed. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

United States. Post Office Department. Improper Acceptance of Matter Without Postage Stamps Affixed. GPO, 1929.

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