APA (7th ed.) Citation

United States. Postmaster General. (1930). Sheet postal cards spoiled in cutting not redeemable. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Postmaster General. Sheet Postal Cards Spoiled in Cutting Not Redeemable. Washington: U.S. GPO, 1930.

MLA (9th ed.) Citation

United States. Postmaster General. Sheet Postal Cards Spoiled in Cutting Not Redeemable. U.S. GPO, 1930.

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