Karl Bach. (1979). Selling is simple ... if you don't make it complicated. San Francisco, California: Advance Books.
シカゴスタイル引用形Karl Bach. Selling Is Simple ... If You Don't Make It Complicated. San Francisco, California: Advance Books, 1979.
MLA引用形式Karl Bach. Selling Is Simple ... If You Don't Make It Complicated. San Francisco, California: Advance Books, 1979.
警告: この引用は必ずしも正確ではありません.