Citazione APA

Naterop,, B. J., & Revell,, R. (2004). Telephoning in English (3.). Cambridge University Press.

Stile di citazione Chicago

Naterop,, B. Jean, e Rod Revell. Telephoning in English. 3. New Delhi: Cambridge University Press, 2004.

Citazione MLA

Naterop,, B. Jean, e Rod Revell. Telephoning in English. 3. Cambridge University Press, 2004.