Cita APA (7th ed.)
Jakeman, V., & Mcdowell, C. (2004). Step up to ielts: Personal study book with answers. CUP.
Cita Chicago (17th ed.)
Jakeman, Vanessa, i Clare Mcdowell. Step Up to Ielts: Personal Study Book with Answers. Cambridge: CUP, 2004.
Cita MLA (9th ed.)
Jakeman, Vanessa, i Clare Mcdowell. Step Up to Ielts: Personal Study Book with Answers. CUP, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.