Citazione Stile APA (7a Edizione)
(1978). U. S. Exports: Schedule B commodity groupings : schedule B commodity by country : quantity and value : current and cumulative. U.S. Department of Commerce.
Citazione stile Chigago Style (17a edizione)
U. S. Exports: Schedule B Commodity Groupings : Schedule B Commodity by Country : Quantity and Value : Current and Cumulative. Washington: U.S. Department of Commerce, 1978.
Citatione MLA (9a ed.)
U. S. Exports: Schedule B Commodity Groupings : Schedule B Commodity by Country : Quantity and Value : Current and Cumulative. U.S. Department of Commerce, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.