雅思考试命题研究小组. (2008). 雅思词汇30天突破: Test bible to break through IELTS vocabulary in 30 days. 中国石化出版社.
Chicago (17e ed.) Bronvermelding雅思考试命题研究小组. 雅思词汇30天突破: Test Bible to Break Through IELTS Vocabulary in 30 Days. 中国石化出版社, 2008.
MLA (8e ed.) Bronvermelding雅思考试命题研究小组. 雅思词汇30天突破: Test Bible to Break Through IELTS Vocabulary in 30 Days. 中国石化出版社, 2008.
Let op: Deze citaties zijn niet altijd 100% accuraat.