Hauzan Arrafi Hudzaifah, Nabila Kharimah Vedy. The Effectiveness Of Using Whatsapp Business And A Website In Supporting Business-To-Business Sales at PT Baja Kurnia. IJEBIR [Internet]. 2026Oct.7 [cited 2026Oct.13];5(06):371-85. Available from: https://www.e-journal.citakonsultindo.or.id/index.php/IJEBIR/article/view/6796