宋旭惟. (2011). 升职无敌英语口语: Spoken English for the workplace. 中国纺织出版社.
Chicago (17e ed.) Bronvermelding宋旭惟. 升职无敌英语口语: Spoken English for the Workplace. 中国纺织出版社, 2011.
MLA (8e ed.) Bronvermelding宋旭惟. 升职无敌英语口语: Spoken English for the Workplace. 中国纺织出版社, 2011.
Let op: Deze citaties zijn niet altijd 100% accuraat.