Zelazny, Gene.

Say it with charts workbook / …で: Zelazny, Gene. (言語・文字資料 (印刷物))

Say it with presentations :how to design and deliver successful business presentations / …で: Zelazny, Gene. (言語・文字資料 (印刷物))

Say it with charts :the executive's guide to visual communication / …で: Zelazny, Gene. (言語・文字資料 (印刷物))