Enos, R. L. E. (1990). Oral and written communication: Historical approaches. Sage Publications.
Παραπομπή Chicago StyleEnos, Richard Leo Ed. Oral and Written Communication: Historical Approaches. California: Sage Publications, 1990.
Παραπομπή MLAEnos, Richard Leo Ed. Oral and Written Communication: Historical Approaches. Sage Publications, 1990.
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