郑一群. (2010). 成为企业最需要的人: Become most needed people of company. 中华工商联合出版社.
Lua i Stíl Chicago (17ú heag.)郑一群. 成为企业最需要的人: Become Most Needed People of Company. 中华工商联合出版社, 2010.
Lua MLA (8ú heag.)郑一群. 成为企业最需要的人: Become Most Needed People of Company. 中华工商联合出版社, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.