APA aipamena

Radley, P. (2005). Horizons: Student's book 1. Oxford: Oxford University Press.

Chicago Style aipamena

Radley, Paul. Horizons: Student's Book 1. Oxford: Oxford University Press, 2005.

MLA aipamena

Radley, Paul. Horizons: Student's Book 1. Oxford: Oxford University Press, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.