(美)史蒂芬·柯维. (2020). 高效能人士的七个习惯 The 7 habits of highly effictive people 30周年纪念版：．，. 中国青年出版社.
Dyfyniad Arddull Chicago(美)史蒂芬·柯维. 高效能人士的七个习惯 The 7 Habits of Highly Effictive People 30周年纪念版：．，. 中国青年出版社, 2020.
Dyfyniad MLA(美)史蒂芬·柯维. 高效能人士的七个习惯 The 7 Habits of Highly Effictive People 30周年纪念版：．，. 中国青年出版社, 2020.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.