Murphy, R. Basic Grammar in use. Reference and practice for students of English (5a ed.).
Chicago-referens (17:e uppl.)Murphy, Raymond. Basic Grammar in Use. Reference and Practice for Students of English. 5a ed.
MLA-referens (8:e uppl.)Murphy, Raymond. Basic Grammar in Use. Reference and Practice for Students of English. 5a ed.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.