Παραπομπή APA

Naterop, B. J. (2004). Telephoning in English (3rd.ed.). Cambridge University Press.

Παραπομπή Chicago Style

Naterop, B. Jean. Telephoning in English. 3rd.ed. Cambridge: Cambridge University Press, 2004.

Παραπομπή MLA

Naterop, B. Jean. Telephoning in English. 3rd.ed. Cambridge University Press, 2004.