Brown, H. D. (2007). Principles of language learning and teaching (5th ed.). Pearson Longman.
Lua i Stíl Chicago (17ú heag.)Brown, H. Douglas. Principles of Language Learning and Teaching. 5th ed. White Plains, NY: Pearson Longman, 2007.
Lua MLA (8ú heag.)Brown, H. Douglas. Principles of Language Learning and Teaching. 5th ed. Pearson Longman, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.