(1990). Students in the Language Lab.
Lua i Stíl Chicago (17ú heag.)Students in the Language Lab. 1990.
Lua MLA (8ú heag.)Students in the Language Lab. 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)