Soars, L., & Soars, J. (1998). New headway english course. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Soars, Liz, agus John Soars. New Headway English Course. Oxford: Oxford University Press, 1998.
Lua MLA (8ú heag.)Soars, Liz, agus John Soars. New Headway English Course. Oxford University Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.