Nora, S., Kamelia Noviyanti Saragih and Aisar Novita 2025. The Participation of Oil Palm Growers ( Elaeis guineensis Jacq.) in Marketing Their Products at the Multi-Business Consumer Cooperative in Pematang Bandar District, Simalungun Regency. Jurnal Online Pertanian Tropik. 10, 3 (Mar. 2025), 36–42. DOI:https://doi.org/10.32734/jpt.v10i3.9101.