Greenall, S., & Pye, D. (2002). Reading 4. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Greenall, Simon, agus Diana Pye. Reading 4. Cambridge: Cambridge University Press, 2002.
Lua MLA (9ú heag.)Greenall, Simon, agus Diana Pye. Reading 4. Cambridge University Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.