APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Black, Michael, and Wendy Sharp. Objective IELTS. Intermediate: Self-study Student's Book. Cambridge University Press, 2006.

Warning: These citations may not always be 100% accurate.