MURPHY, R. (1990). Essential grammar in use: A self-study reference andpractice book for elementary students of english. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)MURPHY, Raymond. Essential Grammar in Use: A Self-study Reference Andpractice Book for Elementary Students of English. Cambridge: Cambridge University Press, 1990.
Lua MLA (9ú heag.)MURPHY, Raymond. Essential Grammar in Use: A Self-study Reference Andpractice Book for Elementary Students of English. Cambridge University Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.