United States. Bureau of the Census. U.S. foreign trade statistics: Classifications and cross-classifications, 1974.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1974.
MLA (9th ed.) CitationUnited States. Bureau of the Census. U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1974.
Warning: These citations may not always be 100% accurate.