APA aipamena

Blackwell, A., & Naber, T. (2007). Open forum 1: Academic listening and speaking. Oxford: Oxford Univ. Press.

Chicago Style aipamena

Blackwell, Angela, và Therese Naber. Open Forum 1: Academic Listening and Speaking. Oxford: Oxford Univ. Press, 2007.

MLA aipamena

Blackwell, Angela, và Therese Naber. Open Forum 1: Academic Listening and Speaking. Oxford: Oxford Univ. Press, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.