Murphy, R. Basic grammar in use. Reference and practice for students of english (3a ed.).
芝加哥风格引文Murphy, Raymond. Basic Grammar in Use. Reference and Practice for Students of English. 3a ed.
MLA引文Murphy, Raymond. Basic Grammar in Use. Reference and Practice for Students of English. 3a ed.
警告：这些引文格式不一定是100％准确.