Cita APA

Black, M., & Sharp, W. (2006). Objective IELTS Intermediate: Teacher's book. Cambridge, United Kingdom: Cambridge University Press.

Citación estilo Chicago

Black, Michael, and Wendy Sharp. Objective IELTS Intermediate: Teacher's Book. Cambridge, United Kingdom: Cambridge University Press, 2006.

Cita MLA

Black, Michael, and Wendy Sharp. Objective IELTS Intermediate: Teacher's Book. Cambridge, United Kingdom: Cambridge University Press, 2006.