Wilcox, Dennis L Public relations : strategies and tactics / Dennis L. Wilcox, Phillip H. Ault, Warren K. Agee - 5th ed - New York: Longman, 1998 - xxiv, 584 p.: ill. (some col.); 24 cm. Includes bibliographical references (p. 555-565) and index. ISBN: 0321015479 Subjects--Topical Terms: Public relations.Public relations--United States