Jefkins, F., & Yadin, D. (1998). Public relations (5th ed.). Prentice Hall.
Cita Chicago Style (17a ed.)Jefkins, Frank, y Daniel Yadin. Public Relations. 5th ed. London: Prentice Hall, 1998.
Cita MLA (9a ed.)Jefkins, Frank, y Daniel Yadin. Public Relations. 5th ed. Prentice Hall, 1998.
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