APA

United States, . (2003). Foreign trade zones manual. [Washington, D.C.?]: Dept. of Homeland Security, Customs and Border Protection, Office of Field Operations.

Chicago

United States, . 2003. Foreign trade zones manual. [Washington, D.C.?]: Dept. of Homeland Security, Customs and Border Protection, Office of Field Operations.

Harvard

United States, . (2003). Foreign trade zones manual. [Washington, D.C.?]: Dept. of Homeland Security, Customs and Border Protection, Office of Field Operations.

MLA

United States, . Foreign trade zones manual. [Washington, D.C.?]: Dept. of Homeland Security, Customs and Border Protection, Office of Field Operations. 2003.