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2) Geri Forsberg. PhD, “College relationships: Improve your communication skills”, Power to change ministries, 2016, US. www.powertochange.com .

3) Kamal, “Effective communication”, Jan 7, 2015. www.linkedin.com

4) Sherwyn P Morreale, “Why communication is important”, Journal of the association for communication administration, 2000. www.natcom.org