Soars, L., & Soars, J. (2003). New Headway: Intermediate workbook with key (3rd ed.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Soars, Liz, agus John Soars. New Headway: Intermediate Workbook with Key. 3rd ed. Oxford: Oxford University Press, 2003.
Lua MLA (8ú heag.)Soars, Liz, agus John Soars. New Headway: Intermediate Workbook with Key. 3rd ed. Oxford University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.