APA aipamena

Soars, J. &. L., & Soars, L. (1991). Headway, Pre-Intermediate: Workbook. Oxford: Oxford University Press.

Chicago Style aipamena

Soars, John & Liz, và Liz Soars. Headway, Pre-Intermediate: Workbook. Oxford: Oxford University Press, 1991.

MLA aipamena

Soars, John & Liz, và Liz Soars. Headway, Pre-Intermediate: Workbook. Oxford: Oxford University Press, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.