APA (7th ed.) Citation

United States. Bureau of the Census. U.S. general imports. U.S. Dept. of Commerce, Bureau of the Census.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. U.S. General Imports. [Washington, D.C.?]: U.S. Dept. of Commerce, Bureau of the Census.

MLA (9th ed.) Citation

United States. Bureau of the Census. U.S. General Imports. U.S. Dept. of Commerce, Bureau of the Census.

Warning: These citations may not always be 100% accurate.