Naterop,, J. B., & Revell,, R. Telephoning in English- Audio CD 2 (3.). Cambridge University Press.
Chicago Edition CitationNaterop,, Jean B., i Rod Revell. Telephoning in English- Audio CD 2. 3. New York: Cambridge University Press.
Cita MLANaterop,, Jean B., i Rod Revell. Telephoning in English- Audio CD 2. 3. Cambridge University Press.
Atenció: Aquestes cites poden no estar 100% correctes.