APA

U.S. Bureau of the Census, . (1992). Guide to foreign trade statistics. Washington: U.S. Govt. Print. Off.

Chicago

U.S. Bureau of the Census, . 1992. Guide to foreign trade statistics. Washington: U.S. Govt. Print. Off.

Harvard

U.S. Bureau of the Census, . (1992). Guide to foreign trade statistics. Washington: U.S. Govt. Print. Off.

MLA

U.S. Bureau of the Census, . Guide to foreign trade statistics. Washington: U.S. Govt. Print. Off. 1992.