APA

Black M., Capel C., . (2006). Objective IELTS. Advanced. Student's Book. Cambridge: Cambridge University Press.

Chicago

Black M, Capel C, . 2006. Objective IELTS. Advanced. Student's Book. Cambridge: Cambridge University Press.

Harvard

Black M., Capel C., . (2006). Objective IELTS. Advanced. Student's Book. Cambridge: Cambridge University Press.

MLA

Black M, Capel C, . Objective IELTS. Advanced. Student's Book. Cambridge: Cambridge University Press. 2006.