Naterop, B. J., & Revell, R. (1997). Telephoning in English (2nd ed.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Naterop, B. Jean, agus Rod Revell. Telephoning in English. 2nd ed. Cambridge, UK ; New York: Cambridge University Press, 1997.
Lua MLA (8ú heag.)Naterop, B. Jean, agus Rod Revell. Telephoning in English. 2nd ed. Cambridge University Press, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.