Comfort, J., & Utley, D. (1996). Effective telephoning: Teacher's book. Oxford: Oxford University Press.
Chicago-стиль цитированияComfort, Jeremy., và Derek Utley. Effective Telephoning: Teacher's Book. Oxford: Oxford University Press, 1996.
MLA-цитированиеComfort, Jeremy., và Derek Utley. Effective Telephoning: Teacher's Book. Oxford: Oxford University Press, 1996.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.