Lua APA (7ú heag.)
Jakeman, V., & Mcdowell, C. (2004). Step up to ielts: Personal study book with answers. CUP.
Lua i Stíl Chicago (17ú heag.)
Jakeman, Vanessa, agus Clare Mcdowell. Step Up to Ielts: Personal Study Book with Answers. Cambridge: CUP, 2004.
Lua MLA (9ú heag.)
Jakeman, Vanessa, agus Clare Mcdowell. Step Up to Ielts: Personal Study Book with Answers. CUP, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.