Center, A. H., & Jackson, P. (2014). Public relations practices: Managerial case studies and problems (8th ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Center, Allen H., agus Patrick Jackson. Public Relations Practices: Managerial Case Studies and Problems. 8th ed. Boston: Pearson, 2014.
Lua MLA (9ú heag.)Center, Allen H., agus Patrick Jackson. Public Relations Practices: Managerial Case Studies and Problems. 8th ed. Pearson, 2014.
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