APA aipamena

Soars, L., & Soars, J. (1990). Headway Elementary: Student"s Book. Oxford: Oxford University Press.

Chicago Style aipamena

Soars, Liz, và John Soars. Headway Elementary: Student"s Book. Oxford: Oxford University Press, 1990.

MLA aipamena

Soars, Liz, và John Soars. Headway Elementary: Student"s Book. Oxford: Oxford University Press, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.