APA

United States, . (1986). Cargo imports: customs needs to better assure compliance with trade laws and regulations. [Washington, D.C: .

Chicago

United States, . 1986. Cargo imports: customs needs to better assure compliance with trade laws and regulations. [Washington, D.C: .

Harvard

United States, . (1986). Cargo imports: customs needs to better assure compliance with trade laws and regulations. [Washington, D.C: .

MLA

United States, . Cargo imports: customs needs to better assure compliance with trade laws and regulations. [Washington, D.C: . 1986.