Levin, P. (2009). Write great essays (2nd ed.). Open University Press.
Lua i Stíl Chicago (17ú heag.)Levin, Peter. Write Great Essays. 2nd ed. Maidenhead, England: Open University Press, 2009.
Lua MLA (9ú heag.)Levin, Peter. Write Great Essays. 2nd ed. Open University Press, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.