APA aipamena

Soars, L., & Soars, J. (2003). American headway: Student book. Oxford: Oxford Univ. Press.

Chicago Style aipamena

Soars, Liz, và John Soars. American Headway: Student Book. Oxford: Oxford Univ. Press, 2003.

MLA aipamena

Soars, Liz, và John Soars. American Headway: Student Book. Oxford: Oxford Univ. Press, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.