UTILIZING WHATSAPP API FOR SCHOOL PAYMENT SYSTEM IMPLEMENTATION WITH CODEIGNITER. JURNAL TEKNOLOGI INFORMASI DAN KOMUNIKASI, [S. l.], v. 15, n. 1, p. 168–177, 2024. DOI: 10.51903/jtikp.v15i1.844. Disponível em: https://ejurnal.provisi.ac.id/index.php/JTIKP/article/view/844. Acesso em: 12 nov. 2026.