Leech, G., & Svartvik, J. (2002). A communicative grammar of English (3rd ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Leech, Geoffrey, agus Jan Svartvik. A Communicative Grammar of English. 3rd ed. London: Pearson, 2002.
Lua MLA (9ú heag.)Leech, Geoffrey, agus Jan Svartvik. A Communicative Grammar of English. 3rd ed. Pearson, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.