United States Postal Service. The Postal Service Guide to U.S. Stamps.
Successfully copied to clipboard
Copying to clipboard failed
Chicago Style (17th ed.) Citation
United States Postal Service. The Postal Service Guide to U.S. Stamps.
Successfully copied to clipboard
Copying to clipboard failed
MLA (9th ed.) Citation
United States Postal Service. The Postal Service Guide to U.S. Stamps.
Successfully copied to clipboard
Copying to clipboard failed
Warning: These citations may not always be 100% accurate.