Style de citation APA (7e éd.)
(1968). U.S. Exports: Country by commodity groupings. U.S. Government Printing Office.
Style de citation Chicago (17e éd.)
U.S. Exports: Country by Commodity Groupings. Washington: U.S. Government Printing Office, 1968.
Style de citation MLA (9e éd.)
U.S. Exports: Country by Commodity Groupings. U.S. Government Printing Office, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.