(1985). Speaking with confidence: How to take the worries out of business presentations. New York: BusinessWeek.
Chicago-стиль цитированияSpeaking With Confidence: How to Take the Worries Out of Business Presentations. New York: BusinessWeek, 1985.
MLA-цитированиеSpeaking With Confidence: How to Take the Worries Out of Business Presentations. New York: BusinessWeek, 1985.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.