Jakeman, V. (2004). Step up to IELTS. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Jakeman, Vanessa. Step Up to IELTS. Cambridge: Cambridge University Press, 2004.
Lua MLA (8ú heag.)Jakeman, Vanessa. Step Up to IELTS. Cambridge University Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.