Bourke, K. (2003). English verbs and tenses: Pre-intermediate. Oxford: Oxford Univ. Press.
Trích dẫn kiểu ChicagoBourke, Kenna. English Verbs and Tenses: Pre-intermediate. Oxford: Oxford Univ. Press, 2003.
MLA引文Bourke, Kenna. English Verbs and Tenses: Pre-intermediate. Oxford: Oxford Univ. Press, 2003.
警告:这些引文格式不一定是100%准确.