Mujahidin, Achmad Isra. “Website Design for Concrete Product Promotion at PT Varia Usaha Bangkalan Madura: Perancangan Website Untuk Promosi Produk Beton Di PT Varia Usaha Bangkalan Madura”. Indonesian Journal of Innovation Studies 26, no. 1 (October 8, 2026): 10.21070/ijins.v26i1.2401. Accessed October 15, 2026. https://ijins.umsida.ac.id/index.php/ijins/article/view/2401.