International Trade Centre UNCTAD/GATT. (1975). Trade information classification. The Centre.
Chicagoスタイル(17版)引用形式International Trade Centre UNCTAD/GATT. Trade Information Classification. Geneva: The Centre, 1975.
MLA(9版)引用形式International Trade Centre UNCTAD/GATT. Trade Information Classification. The Centre, 1975.
警告: この引用は必ずしも正確ではありません.