Agung Ferdinan Sandy, Agung, Herlinda, and Lukman. “Rancang Bangun Sistem Informasi Administrasi Surat Menyurat Di Yayasan Insan Peduli Sejahtera Berbasis PHP”. Jurnal Insan Peduli Informatika (JIPETIK) 2, no. 2 (December 31, 2024): 86–96. Accessed May 30, 2026. https://ejournal.lppinpest.org/index.php/jipetik/article/view/122.