APA (7th ed.) Citation

United States. Bureau of the Census. (1981). U.S. foreign trade statistics: Classifications and cross-classifications, 1980. U.S. Dept. of Commerce, Bureau of the Census.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1980. [Washington, D.C.]: U.S. Dept. of Commerce, Bureau of the Census, 1981.

MLA (9th ed.) Citation

United States. Bureau of the Census. U.S. Foreign Trade Statistics: Classifications and Cross-classifications, 1980. U.S. Dept. of Commerce, Bureau of the Census, 1981.