Παραπομπή σε μορφή APA (7η εκδ.)

Powell, D. (2005). Common mistakes at CAE - and how to avoid them. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Powell, Debra. Common Mistakes at CAE - and How to Avoid Them. Cambridge: Cambridge University Press, 2005.

Παραπομπή σε μορφή MLA (9th εκδ.)

Powell, Debra. Common Mistakes at CAE - and How to Avoid Them. Cambridge University Press, 2005.