APA (7th ed.) Citation

United States. Postmaster General. (1929). Insured parcel post to Straits Settlements. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Postmaster General. Insured Parcel Post to Straits Settlements. Washington: U.S. GPO, 1929.

MLA (9th ed.) Citation

United States. Postmaster General. Insured Parcel Post to Straits Settlements. U.S. GPO, 1929.

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