Lie, Darwin, Nana Triapnita Nainggolan, Lora Ekana Nainggolan, Heri Pandapotan Silitonga, and Debi Eka Putri. 2023. “Optimizing The Use Of Social Media And The Importance Of Financial Management For Smes/Smes In Pematang Siantar City”. International Journal Of Community Service 3 (3):138-43. https://doi.org/10.51601/ijcs.v3i3.194.