APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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