Comfort, J. (1996). Effective Telephoning: Teacher`s book. Oxford University Press.
Chicago Style aipamenaComfort, Jeremy. Effective Telephoning: Teacher`s Book. Oxford: Oxford University Press, 1996.
MLA aipamenaComfort, Jeremy. Effective Telephoning: Teacher`s Book. Oxford University Press, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.