卡内基 & 胡延伟. (2008). 人性的弱点: How to win friends and influence people. 天津人民出版社.
Chicago Style (17th ed.) Citation卡内基 and 胡延伟. 人性的弱点: How to Win Friends and Influence People. 天津人民出版社, 2008.
MLA citiranje卡内基 and 胡延伟. 人性的弱点: How to Win Friends and Influence People. 天津人民出版社, 2008.
Opozorilo: Ti citati niso vedno 100% točni.