Jakeman, V. (2004). Step up to IELTS. Cambridge University Press.
Citación estilo ChicagoJakeman, Vanessa. Step Up to IELTS. Cambridge: Cambridge University Press, 2004.
Cita MLAJakeman, Vanessa. Step Up to IELTS. Cambridge University Press, 2004.
Warning: These citations may not always be 100% accurate.