Center, A. H., & Jackson, P. (1990). Public relations practices: Managerial case studies and problems (4th ed.). Prentice-Hall.
Citace podle Chicago (17th ed.)Center, Allen H., a Patrick Jackson. Public Relations Practices: Managerial Case Studies and Problems. 4th ed. Englewood Cliffs, N.J: Prentice-Hall, 1990.
Citace podle MLA (9th ed.)Center, Allen H., a Patrick Jackson. Public Relations Practices: Managerial Case Studies and Problems. 4th ed. Prentice-Hall, 1990.
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