National Productivity Corporation & Perbadanan Produktiviti Negara. (1997). Productivity primer. National Productivity Corporation.
Chicagoスタイル(17版)引用形式National Productivity Corporation , Perbadanan Produktiviti Negara. Productivity Primer. Petaling Jaya: National Productivity Corporation, 1997.
MLA(8版)引用形式National Productivity Corporation , Perbadanan Produktiviti Negara. Productivity Primer. National Productivity Corporation, 1997.
警告: この引用は必ずしも正確ではありません.