BURNS, D. &. N. (2016). MASTERING GRAMMAR - A BOOK OF ENGLISH GRAMMAR & COMPOSITION - 8. CARDOVA PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)BURNS, DAVID & NAGARAJAN. MASTERING GRAMMAR - A BOOK OF ENGLISH GRAMMAR & COMPOSITION - 8. NEW DELHI: CARDOVA PUBLICATIONS, 2016.
Lua MLA (9ú heag.)BURNS, DAVID & NAGARAJAN. MASTERING GRAMMAR - A BOOK OF ENGLISH GRAMMAR & COMPOSITION - 8. CARDOVA PUBLICATIONS, 2016.
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