APA aipamena

Soars, L., & Soars, J. (1994). Headway Elementary: Workbook. Oxford: Oxford University Press.

Chicago Style aipamena

Soars, Liz, và John Soars. Headway Elementary: Workbook. Oxford: Oxford University Press, 1994.

MLA aipamena

Soars, Liz, và John Soars. Headway Elementary: Workbook. Oxford: Oxford University Press, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.