(1985). Speaking with confidence: How to take the worries out of business presentations. New York: BusinessWeek.
استشهاد بنمط شيكاغوSpeaking With Confidence: How to Take the Worries Out of Business Presentations. New York: BusinessWeek, 1985.
MLA استشهادSpeaking With Confidence: How to Take the Worries Out of Business Presentations. New York: BusinessWeek, 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.