APA (7th ed.) Citation

(2007). The art of stamp collecting. U.S. Postal Service.

Chicago Style (17th ed.) Citation

The Art of Stamp Collecting. [Washington, D.C.]: U.S. Postal Service, 2007.

MLA (9th ed.) Citation

The Art of Stamp Collecting. U.S. Postal Service, 2007.

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