Howard, C. (1979). Contact: A textbook in apllied communications (3rd.). Prentice Hall.
Čikaški stil citiranja (17. izdanje)Howard, C. Contact: A Textbook in Apllied Communications. 3rd. New Jersey: Prentice Hall, 1979.
MLA način citiranja (9. izdanje)Howard, C. Contact: A Textbook in Apllied Communications. 3rd. Prentice Hall, 1979.
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