kennedy, janero. “SISTEM INFORMASI PERPUSTAKAAN SDN KARANGANYAR 04 GANDRUNGMANGU CILACAP”. Jurnal Teknologi Dan Bisnis, vol. 2, no. 2, Dec. 2020, pp. 240-57, https://e-jurnal.stmikkomputama.ac.id/index.php/jtb/article/view/123.