Items where Author is "Ningrum, Ummi Prastya"
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Skripsi
Ningrum, Ummi Prastya (2020) Penerapan Total Quality Services (TQS) Pada Lembaga Kursus Dan Pelatihan Utama Jaya Kabupaten Deli Serdang. Masters thesis, Universitas Islam Negeri Sumatera Utara.