Marzouk، Y. Y. (2014). Ethical Leadership and its effect on Organizational voice and Silence: An applied Study on the employees of Institution of developing New Damietta City. المجلة العلمية للدراسات التجارية والبيئية، مج5, ع3 ، 1 - 57. مسترجع من http://search.mandumah.com/Record/712600
Marzouk، Yasmine Yahia. "Ethical Leadership and Its Effect On Organizational Voice and Silence: An Applied Study On the Employees of Institution of Developing New Damietta City." المجلة العلمية للدراسات التجارية والبيئية مج5, ع3 (2014): 1 - 57. مسترجع من http://search.mandumah.com/Record/712600