Barnes, D. R., Britton, J. N., & Rosen, H. (1969). Language, the learner and the school (Revised edition.). Penguin.
Lua i Stíl Chicago (17ú heag.)Barnes, Douglas R., James N. Britton, agus Harold Rosen. Language, the Learner and the School. Revised edition. Harmondsworth: Penguin, 1969.
Lua MLA (8ú heag.)Barnes, Douglas R., et al. Language, the Learner and the School. Revised edition. Penguin, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.