Yafiz, Muhammad, Senior Lecturer, State Islamic University of Sumatera Utara Medan
Yudiana, Desi, Student of Graduate School of State Islamic University of North Sumatra, Indonesia; Teacher at Madrasah Ibtida’iyyah State Tanjung Sari Medan
Yurnita, Syamsu, Senior lucturer at University of Muhammadiyah Sumatera Utara
Yurnita, Syamsu Yurnita, Muhamamdiyah University of North Sumatra
Yuslem, Nawir, School of Postgraduate, State Islamic University of North Sumatra
Yuslim, Nawir, Professor at School of Postgraduate, The State Islamic University of North Sumatra, Medan - Indonesia
Yusnadi, Yusnadi Yusnadi, Professor, Faculty of da'wah and Communication State Islamic University of North Sumatra

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