Murphy, R. (1992). Essential English grammar: A self- study reference and practice book for elementary students of English (Second edition.). Cambridge University Press ; Foundation Books.
Παραπομπή σε μορφή Chicago (17η εκδ.)Murphy, Raymond. Essential English Grammar: A Self- Study Reference and Practice Book for Elementary Students of English. Second edition. Cambridge : New Delhi: Cambridge University Press ; Foundation Books, 1992.
Παραπομπή σε μορφή MLA (8th εκδ.)Murphy, Raymond. Essential English Grammar: A Self- Study Reference and Practice Book for Elementary Students of English. Second edition. Cambridge University Press ; Foundation Books, 1992.
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