APA-referens (7:e uppl.)
Hewings, M. (1999). Advanced English grammar: A self study reference and practice book for advanced South Asian students. Foundation Books ; Cambridge University Press.
Chicago-referens (17:e uppl.)
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-referens (9:e uppl.)
Hewings, Martin. Advanced English Grammar: A Self Study Reference and Practice Book for Advanced South Asian Students. Foundation Books ; Cambridge University Press, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.