Rif’an, Mohamad. “KOMPARASI EVALUASI OPAC PERPUSTAKAAN UNIVERSITAS INDONESIA DAN RESEARCH REPOSITORY UNIVERSITAS MUHAMMADIYAH YOGYAKARTA”. Publication Library and Information Science 2, no. 2 (January 11, 2019): 43–52. Accessed October 26, 2025. http://journal.umpo.ac.id/index.php/PUBLIS/article/view/1154.