(1975). Sistem Break-even British Institute Of Management. Djambatan.
Chicagoスタイル(17版)引用形式Sistem Break-even British Institute Of Management. Djambatan, 1975.
MLA(8版)引用形式Sistem Break-even British Institute Of Management. Djambatan, 1975.
警告: この引用は必ずしも正確ではありません.