Black, M. (2006). Objective IELTS: Intermediate Workbook with Answers. Cambridge, UK: Cambridge University Press.
Chicago ZitierstilBlack, Michael. Objective IELTS: Intermediate Workbook With Answers. Cambridge, UK: Cambridge University Press, 2006.
MLA ZitierstilBlack, Michael. Objective IELTS: Intermediate Workbook With Answers. Cambridge, UK: Cambridge University Press, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.