2023. Web-Based And Whatsapp Gateway Tuition Payment Information System (Case Study Of SMK Antartika 2 Sidoarjo): Sistem Informasi Pembayaran SPP Berbasis Web Dan WA Gateway (Studi Kasus : SMK Antartika 2 Sidoarjo). Procedia of Engineering and Life Science. 4, (July 2023). DOI:https://doi.org/10.21070/pels.v4i0.1422.