SWAN, M. (1984). The Cambridge English Course, student's book 1. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)SWAN, Michael. The Cambridge English Course, Student's Book 1. Cambridge University Press, 1984.
Lua MLA (8ú heag.)SWAN, Michael. The Cambridge English Course, Student's Book 1. Cambridge University Press, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.