Suroto, S. (2023). Development of a Visitor Management System According to The Demands of Higher College Libraries in The 4.0 Era. JPUA: Jurnal Perpustakaan Universitas Airlangga: Media Informasi Dan Komunikasi Kepustakawanan, 13(2), 84–93. https://doi.org/10.20473/jpua.v13i2.2023.84-93