Richards, J. C., Aldcorn, S. B., & Bycina, D. (1995). New person to person: Communicative speaking and listening skills. Oxford: Oxford university press.
Chicago Style aipamenaRichards, Jack C., Sue Brioux Aldcorn, và David Bycina. New Person to Person: Communicative Speaking and Listening Skills. Oxford: Oxford university press, 1995.
MLA aipamenaRichards, Jack C., Sue Brioux Aldcorn, và David Bycina. New Person to Person: Communicative Speaking and Listening Skills. Oxford: Oxford university press, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.