Simon, R., & Zappala, J. M. (1994). Public relations workbook: Writing and Techniques. Lincolnwood, Ill.: NTC Business Books.
Dyfyniad Arddull ChicagoSimon, Raymond., và Joseph M. Zappala. Public Relations Workbook: Writing and Techniques. Lincolnwood, Ill.: NTC Business Books, 1994.
Dyfyniad MLASimon, Raymond., và Joseph M. Zappala. Public Relations Workbook: Writing and Techniques. Lincolnwood, Ill.: NTC Business Books, 1994.
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