APA aipamena

Bowler, B., & Parminter, S. (1992). Headway, Pre-Intermediate: Pronunciation. Oxford: Oxford University Press.

Chicago Style aipamena

Bowler, Bill, và Sue Parminter. Headway, Pre-Intermediate: Pronunciation. Oxford: Oxford University Press, 1992.

MLA aipamena

Bowler, Bill, và Sue Parminter. Headway, Pre-Intermediate: Pronunciation. Oxford: Oxford University Press, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.