Manurung, J. “Use of OPAC As A Means Of Refinding Information On STMIK Pelita Nusantara Library: Use of OPAC As A Means Of Refinding Information On STMIK Pelita Nusantara Library”. Jurnal Mantik, vol. 4, no. 2, Aug. 2020, pp. 1200-4, doi:10.35335/mantik.Vol4.2020.924.pp1200-1204.