Peaty, D. (1984). Discovery for students at post-intermediate level (1a. ed.). Oxford University.
Lua i Stíl Chicago (17ú heag.)Peaty, David. Discovery for Students at Post-intermediate Level. 1a. ed. Oxford: Oxford University, 1984.
Lua MLA (9ú heag.)Peaty, David. Discovery for Students at Post-intermediate Level. 1a. ed. Oxford University, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.