易际涨. (2011). 客服圣经: Customer services bible. 中华工商联合出版社.
Chicago Style (17th ed.) Citation易际涨. 客服圣经: Customer Services Bible. 中华工商联合出版社, 2011.
MLA citiranje易际涨. 客服圣经: Customer Services Bible. 中华工商联合出版社, 2011.
Opozorilo: Ti citati niso vedno 100% točni.