Cita APA (7a ed.)

Jakeman, V., & McDowell, C. (2004). Step up to IELTS: Teacher's book. Cambridge University Press.

Cita Chicago Style (17a ed.)

Jakeman, Vanessa, y Clare McDowell. Step Up to IELTS: Teacher's Book. New York: Cambridge University Press, 2004.

Cita MLA (9a ed.)

Jakeman, Vanessa, y Clare McDowell. Step Up to IELTS: Teacher's Book. Cambridge University Press, 2004.