Hauzan Arrafi Hudzaifah and Nabila Kharimah Vedy (2026) “The Effectiveness Of Using Whatsapp Business And A Website In Supporting Business-To-Business Sales at PT Baja Kurnia”, International Journal of Economics, Business and Innovation Research, 5(06), pp. 371-385. doi: 10.63922/ijebir.v5i06.6796.