APA-Zitierstil (7. Ausg.)

Oï Dell, F., & Broadhead, A. (2008). Objective CAE: Workbook with answers (2a. ed.). Cambridge University.

Chicago-Zitierstil (17. Ausg.)

Oï Dell, Felicity, und Annie Broadhead. Objective CAE: Workbook with Answers. 2a. ed. Cambridge: Cambridge University, 2008.

MLA-Zitierstil (9. Ausg.)

Oï Dell, Felicity, und Annie Broadhead. Objective CAE: Workbook with Answers. 2a. ed. Cambridge University, 2008.