Franklin

MLA

World Trade Information Service. Washington: U.S. Dept. of Commerce; for sale by the Superintendent of Documents, U.S. Govt. Print. Off, .

APA

World trade information service. Washington: U.S. Dept. of Commerce; for sale by the Superintendent of Documents, U.S. Govt. Print. Off.

Chicago

World Trade Information Service. Part 4, Utilities Abroad. Washington: U.S. Dept. of Commerce; for sale by the Superintendent of Documents, U.S. Govt. Print. Off.