Lie, D. .; Triapnita Nainggolan, N. .; Ekana Nainggolan, L.; Pandapotan Silitonga, H. .; Eka Putri, D. . Optimizing The Use Of Social Media And The Importance Of Financial Management For Smes/Smes In Pematang Siantar City. IJCS 2023, 3, 138-143.