Robert, R. L. “Perancangan Aplikasi Notifikasi WhatsApp Melalui WhatsApp Business API Terhadap Wajib Pajak: (Studi Kasus: SAMSAT Pontianak)”. Prosiding CORISINDO 2023, Aug. 2023, https://stmikpontianak.org/ojs/index.php/corisindo/article/view/27.