Cita APA (7a ed.)
(1980). U.S. trade with Puerto Rico and U.S. possessions. U.S. Department of Commerce.
Cita Chicago Style (17a ed.)
U.S. Trade with Puerto Rico and U.S. Possessions. Washington: U.S. Department of Commerce, 1980.
Cita MLA (9a ed.)
U.S. Trade with Puerto Rico and U.S. Possessions. U.S. Department of Commerce, 1980.
Precaución: Estas citas no son 100% exactas.