Breakenridge, D. (2003). The new PR toolkit. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Breakenridge, Deirdre. The New PR Toolkit. Prentice Hall, 2003.
Lua MLA (8ú heag.)Breakenridge, Deirdre. The New PR Toolkit. Prentice Hall, 2003.
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