SEHGAL,NANCY. (2006). GRAMMAR MADE EASY BOOK-1.
Chicago Style aipamenaSEHGAL,NANCY. GRAMMAR MADE EASY BOOK-1. 2006.
MLA aipamenaSEHGAL,NANCY. GRAMMAR MADE EASY BOOK-1. 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena