APA aipamena

Slater, S. (2003). IELTS on track. Language Australia.

Chicago Style aipamena

Slater, Stephen. IELTS on Track. Language Australia, 2003.

MLA aipamena

Slater, Stephen. IELTS on Track. Language Australia, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.