Heripracoyo, Sulistyo. 2012. “Data Warehouse Dan Data Mining Pendidikan Tinggi: Studi Kasus Kategori Undur Diri Di Universitas Bina Nusantara”. ComTech: Computer, Mathematics and Engineering Applications 3 (2):808-23. https://doi.org/10.21512/comtech.v3i2.2309.