APA (7th ed.) Zitazioa
Ellis, R. (2002). Communication skills: Stepladders to success for the professional. Intellect.
Chicago Style (17th ed.) Zitazioa
Ellis, Richard. Communication Skills: Stepladders to Success for the Professional. Oxford: Intellect, 2002.
MLA (9th ed.) Zitazioa
Ellis, Richard. Communication Skills: Stepladders to Success for the Professional. Intellect, 2002.
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