SACHS, W. S. (1981). Product Planning And Management/william S.sachs. PennWell Books.
Chicagoスタイル(17版)引用形式SACHS, William S. Product Planning And Management/william S.sachs. PennWell Books, 1981.
MLA(8版)引用形式SACHS, William S. Product Planning And Management/william S.sachs. PennWell Books, 1981.
警告: この引用は必ずしも正確ではありません.