Murphy, R., & Raymond Murphy and William R. Smalzer. (2002). Basic Grammar in use with answers: Self-study reference and practice for students of English. Cambridge, UK: Cambridge Univ. Press.
Παραπομπή Chicago StyleMurphy, Raymond, και Raymond Murphy and William R. Smalzer. Basic Grammar in Use With Answers: Self-study Reference and Practice for Students of English. Cambridge, UK: Cambridge Univ. Press, 2002.
Παραπομπή MLAMurphy, Raymond, και Raymond Murphy and William R. Smalzer. Basic Grammar in Use With Answers: Self-study Reference and Practice for Students of English. Cambridge, UK: Cambridge Univ. Press, 2002.
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