丁兆宇. (2009). 戴尔·卡耐基人生成功思想全书: Collected edition of Dale Camegie's great theories of life. 新世界出版社.
Dyfyniad Arddull Chicago丁兆宇. 戴尔·卡耐基人生成功思想全书: Collected Edition of Dale Camegie's Great Theories of Life. 新世界出版社, 2009.
Dyfyniad MLA丁兆宇. 戴尔·卡耐基人生成功思想全书: Collected Edition of Dale Camegie's Great Theories of Life. 新世界出版社, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.