Verderber, R. F., & Sellnow, D. D. (2018). The challenge of effective speaking in a digital age. Boston, MA: Cengage Learning.
Trích dẫn kiểu ChicagoVerderber, Rudolph F., và Deanna D. Sellnow. The Challenge of Effective Speaking in a Digital Age. Boston, MA: Cengage Learning, 2018.
MLA CitationVerderber, Rudolph F., và Deanna D. Sellnow. The Challenge of Effective Speaking in a Digital Age. Boston, MA: Cengage Learning, 2018.
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