FITRIA AGUSTINA , I.; RUSTIANINGSIH , E.; FEBRIANTI EFENDI, S. OPAC: INNOVATION OF LIBRARY SERVICES IN THE DIGITAL ERA AT SMK NEGERI 1 SIDOARJO. Journal of Geography, Regional Planning and Development, [S. l.], v. 1, n. 2, p. 49–55, 2024. DOI: 10.61796/jgrpd.v1i2.1258. Disponível em: https://journal.antispublisher.id/index.php/JGRPD/article/view/1258. Acesso em: 12 oct. 2025.