Verderber, R. F., Sellnow, D. D., & Verderber, K. S. (2024). The challenge of effective speaking in a digital age (18th edition.). Cengage.
Chicagoスタイル(17版)引用形式Verderber, Rudolph F., Deanna D. Sellnow, , Kathleen S. Verderber. The Challenge of Effective Speaking in a Digital Age. 18th edition. Boston, MA, USA: Cengage, 2024.
MLA(9版)引用形式Verderber, Rudolph F., et al. The Challenge of Effective Speaking in a Digital Age. 18th edition. Cengage, 2024.
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