Naterop, B. J., & Revell, R. (1997). Telephoning in English (2nd ed.). Cambridge University Press.
Cita Chicago Style (17a ed.)Naterop, B. Jean, y Rod Revell. Telephoning in English. 2nd ed. Cambridge, UK ; New York: Cambridge University Press, 1997.
Cita MLA (8a ed.)Naterop, B. Jean, y Rod Revell. Telephoning in English. 2nd ed. Cambridge University Press, 1997.
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