Não informado. (1940). Cocoa Market Report. Gill and Duffus Group.
Chicagoスタイル(17版)引用形式Não informado. Cocoa Market Report. London: Gill and Duffus Group, 1940.
MLA(8版)引用形式Não informado. Cocoa Market Report. Gill and Duffus Group, 1940.
警告: この引用は必ずしも正確ではありません.