Safalingga P, C., Alamsyah Harahap, R., Sari KN Ningtias, N., Siregar, N., & Hakim, A. (2026). 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(2), 176–184. https://doi.org/10.51601/ijse.v6i2.389