Style de citation APA (7e éd.)
(1981). U.S. trade with Puerto Rico and U.S. possessions: April 1981. U.S. Department of Commerce.
Style de citation Chicago (17e éd.)
U.S. Trade with Puerto Rico and U.S. Possessions: April 1981. Washington: U.S. Department of Commerce, 1981.
Style de citation MLA (9e éd.)
U.S. Trade with Puerto Rico and U.S. Possessions: April 1981. U.S. Department of Commerce, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.