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.
Lua i Stíl Chicago (17ú heag.)卡内基 agus 胡延伟. 人性的弱点: How to Win Friends and Influence People. 天津人民出版社, 2008.
Lua MLA (8ú heag.)卡内基 agus 胡延伟. 人性的弱点: How to Win Friends and Influence People. 天津人民出版社, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.