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Universitas HKBP Nonmensen, 2017
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Fakultas Psikologi Universitas Indonesia, 2008
UI - Tesis (Open)
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Fakultas Ekonomi dan Bisnis Universitas Muhammadiyah Prof. Dr. Hamka, 2018
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Sembiring, Elita Modesta Br, author
Universitas HKBP Nonmensen, 2017
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Mochammad Kresna Noer P., author
2012
UI - Tesis (Open)