APA aipamena

(2008). Barron’s ielts international English language testing sytem (Kèm theo CD1-2/912-13).

Chicago Style aipamena

Barron’s Ielts International English Language Testing Sytem (Kèm Theo CD1-2/912-13). 2008.

MLA aipamena

Barron’s Ielts International English Language Testing Sytem (Kèm Theo CD1-2/912-13). 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.