McDowell, J., & Stevens, S. (1982). Basic listening: Teacher's book (1a. ed.). Edward Arnold.
Lua i Stíl Chicago (17ú heag.)McDowell, John, agus Sandra Stevens. Basic Listening: Teacher's Book. 1a. ed. Londres: Edward Arnold, 1982.
Lua MLA (9ú heag.)McDowell, John, agus Sandra Stevens. Basic Listening: Teacher's Book. 1a. ed. Edward Arnold, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.