Gaya APA

Lloyd, G., Waagen, C, L. (1986). The Persuasive Presentation : A Practical Guide to Professional Communication in Organizations . New York: Harper & Row Publishers.

Gaya MLA

Lloyd, Goodall,H., Waagen, Christopher, L. "The Persuasive Presentation : A Practical Guide to Professional Communication in Organizations". New York: Harper & Row Publishers, 1986. .