APA (7th ed.) Zitazioa
Hewings, M. (1999). Advanced English grammar: A self study reference and practice book for advanced South Asian students. Foundation Books ; Cambridge University Press.
Chicago Style (17th ed.) Zitazioa
Hewings, Martin. Advanced English Grammar: A Self Study Reference and Practice Book for Advanced South Asian Students. New Delhi : Cambridge: Foundation Books ; Cambridge University Press, 1999.
MLA (9th ed.) Zitazioa
Hewings, Martin. Advanced English Grammar: A Self Study Reference and Practice Book for Advanced South Asian Students. Foundation Books ; Cambridge University Press, 1999.
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