Cita APA (7a ed.)

United States. Post Office Department. Division of Stamps. (1937). A description of United States postage stamps: Issued by the Post Office Department from July 1, 1847, to December 31, 1936. United States Government Printing Office.

Cita Chicago Style (17a ed.)

United States. Post Office Department. Division of Stamps. A Description of United States Postage Stamps: Issued by the Post Office Department from July 1, 1847, to December 31, 1936. Washington: United States Government Printing Office, 1937.

Cita MLA (9a ed.)

United States. Post Office Department. Division of Stamps. A Description of United States Postage Stamps: Issued by the Post Office Department from July 1, 1847, to December 31, 1936. United States Government Printing Office, 1937.

Precaución: Estas citas no son 100% exactas.