Cita APA

Black, M. (2006). Objective IELTS Intermediate: Self-study student's book. New York: Cambridge University Press.

Citación estilo Chicago

Black, Michael. Objective IELTS Intermediate: Self-study Student's Book. New York: Cambridge University Press, 2006.

Cita MLA

Black, Michael. Objective IELTS Intermediate: Self-study Student's Book. New York: Cambridge University Press, 2006.