Safalingga P, Cleo, Rahmat Alamsyah Harahap, Nawang Sari KN Ningtias, Novelyn Siregar, and Andy Hakim. “Analysis of Supply Chain, Shipping Costs and Consumer Confidence in Purchases on The Shopee E-Commerce Platform in The City of Medan”. International Journal of Science and Environment (IJSE) 6, no. 2 (April 20, 2026): 176–184. Accessed April 23, 2026. https://ijsenet.com/index.php/IJSE/article/view/389.