Supuwiningsih, Ni Nyoman, and Asti Cintya Udayani. 2019. “Pelatihan Promosi Penjualan Kentang Melalui Fan Page Facebook”. WIDYABHAKTI Jurnal Ilmiah Populer 2 (1):20-24. https://doi.org/10.30864/widyabhakti.v2i1.127.