Griyani Elisabeth Purba, Adelina Sitanggang, Depi Yohana Manurung, and Tessa Lonika Simanullang. “Efektifitas Kebijakan Peminjaman Buku Di Digital Library Universitas Negeri Medan”. JURNAL RISET RUMPUN ILMU PENDIDIKAN 4, no. 1 (April 11, 2025): 103–109. Accessed March 2, 2026. https://prin.or.id/index.php/JURRIPEN/article/view/4343.