Hewings, M. (1999). Advanced English grammar: A self reference and practice book for advanced South Asian students. Foundation Books ; Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Hewings, Martin. Advanced English Grammar: A Self Reference and Practice Book for Advanced South Asian Students. New Delhi : Cambridge: Foundation Books ; Cambridge University Press, 1999.
Lua MLA (8ú heag.)Hewings, Martin. Advanced English Grammar: A Self Reference and Practice Book for Advanced South Asian Students. Foundation Books ; Cambridge University Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.