Richards, J. C., & London, A. (2006). Person to Person: Communicative speaking and listening skills : Starter (3rd ed.). Oxford: Oxford Univ. Press.
Παραπομπή Chicago StyleRichards, Jack C., και Andy London. Person to Person: Communicative Speaking and Listening Skills : Starter. 3rd ed. Oxford: Oxford Univ. Press, 2006.
Παραπομπή MLARichards, Jack C., και Andy London. Person to Person: Communicative Speaking and Listening Skills : Starter. 3rd ed. Oxford: Oxford Univ. Press, 2006.
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