Soars, L., & Soars, J. (2000). New headway: English course (1a. ed. 2a. reimp.). Oxford.
Lua i Stíl Chicago (17ú heag.)Soars, Liz, agus John Soars. New Headway: English Course. 1a. ed. 2a. reimp. New York: Oxford, 2000.
Lua MLA (9ú heag.)Soars, Liz, agus John Soars. New Headway: English Course. 1a. ed. 2a. reimp. Oxford, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.