Cita APA (7a ed.)

O'Dell, F., & Broadhead, A. c. (2014). Objective Advanced: Student's book withOUT answers. Cambridge University Press.

Cita Chicago Style (17a ed.)

O'Dell, Felicity, y Annie coaut Broadhead. Objective Advanced: Student's Book WithOUT Answers. Cambridge, United Kingdom: Cambridge University Press, 2014.

Cita MLA (9a ed.)

O'Dell, Felicity, y Annie coaut Broadhead. Objective Advanced: Student's Book WithOUT Answers. Cambridge University Press, 2014.