Soars, J., & Soars, L. (2009). New Headway: Upper-Intermediate : Student's Book (New Edition.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Soars, John, agus Liz Soars. New Headway: Upper-Intermediate : Student's Book. New Edition. New York: Oxford University Press, 2009.
Lua MLA (9ú heag.)Soars, John, agus Liz Soars. New Headway: Upper-Intermediate : Student's Book. New Edition. Oxford University Press, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.