Barnes, D. (1973). Language in the classroom. Open University Press.
Lua i Stíl Chicago (17ú heag.)Barnes, Douglas. Language in the Classroom. Bletchley, Buckinghamshire: Open University Press, 1973.
Lua MLA (8ú heag.)Barnes, Douglas. Language in the Classroom. Open University Press, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.