Mezger, D. (1980). Copper in the world economy. London: Heinemann.
Trích dẫn kiểu ChicagoMezger, Dorothe. Copper in the World Economy. London: Heinemann, 1980.
MLA引文Mezger, Dorothe. Copper in the World Economy. London: Heinemann, 1980.
警告：這些引文格式不一定是100％准確.