Cartledge, I. (1978). A history of the coffee industry in Papua New Guinea. The Board.
Chicagoスタイル(17版)引用形式Cartledge, Ian. A History of the Coffee Industry in Papua New Guinea. [s.l.]: The Board, 1978.
MLA(9版)引用形式Cartledge, Ian. A History of the Coffee Industry in Papua New Guinea. The Board, 1978.
警告: この引用は必ずしも正確ではありません.