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.
Čikaški stil citiranja (17. izdanje)卡内基 i 胡延伟. 人性的弱点: How to Win Friends and Influence People. 天津人民出版社, 2008.
MLA način citiranja (8. izdanje)卡内基 i 胡延伟. 人性的弱点: How to Win Friends and Influence People. 天津人民出版社, 2008.
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