(美)戴尔·卡耐基著 达夫编译. (2018). 人性的弱点 How to win friends and influence people：．，. 中国华侨出版社.
Dyfyniad Arddull Chicago(美)戴尔·卡耐基著 达夫编译. 人性的弱点 How to Win Friends and Influence People：．，. 中国华侨出版社, 2018.
Dyfyniad MLA(美)戴尔·卡耐基著 达夫编译. 人性的弱点 How to Win Friends and Influence People：．，. 中国华侨出版社, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.