Whalen, D. (2007). The professional communications toolkit D. Joel whalen. Sage Publications.
Cita Chicago Style (17a ed.)Whalen, D.Joel. The Professional Communications Toolkit D. Joel Whalen. Sage Publications, 2007.
Cita MLA (8a ed.)Whalen, D.Joel. The Professional Communications Toolkit D. Joel Whalen. Sage Publications, 2007.
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