Richards, J. C., Hull, J., & Proctor, S. (1997). New interchange: English for international communication: level 1 student's book. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Richards, Jack C., Jonathan Hull, agus Susan Proctor. New Interchange: English for International Communication: Level 1 Student's Book. Cambridge: Cambridge University Press, 1997.
Lua MLA (9ú heag.)Richards, Jack C., et al. New Interchange: English for International Communication: Level 1 Student's Book. Cambridge University Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.