Whalen, D. (2007). The professional communications toolkit D. Joel whalen. Sage Publications.
Čikaški stil citiranja (17. izdanje)Whalen, D.Joel. The Professional Communications Toolkit D. Joel Whalen. Sage Publications, 2007.
MLA način citiranja (8. izdanje)Whalen, D.Joel. The Professional Communications Toolkit D. Joel Whalen. Sage Publications, 2007.
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