剑桥商务英语证书考试命题研究小组. (2007). 剑桥商务英语证书(BEC)常考词汇必备手册: Treasure of word power for BEC preliminary, vantage & higher. 中国石化出版社.
Chicago Style (17th ed.) Citation剑桥商务英语证书考试命题研究小组. 剑桥商务英语证书(BEC)常考词汇必备手册: Treasure of Word Power for BEC Preliminary, Vantage & Higher. 中国石化出版社, 2007.
MLA (8th ed.) Citation剑桥商务英语证书考试命题研究小组. 剑桥商务英语证书(BEC)常考词汇必备手册: Treasure of Word Power for BEC Preliminary, Vantage & Higher. 中国石化出版社, 2007.
Warning: These citations may not always be 100% accurate.