Siregar, I. R., Purba, M. I., & Sinaga, A. R. (2025). Pengaruh E-Commerce, Digital Payment, Media Sosial Terhadap Pendapatan Umkm Di Kecamatan Medan Barat. Management Studies and Entrepreneurship Journal (MSEJ), 6(5), 222–234. https://doi.org/10.37385/msej.v6i5.8478