Hidayati, Juliza, Sukardi Sukardi, Ani Suryani, Anas Miftah Fauzi, and Sugiharto Sugiharto. “Optimization of Palm Oil Plantation Revitalization in North Sumatera Indonesia”. International Journal on Advanced Science, Engineering and Information Technology 5, no. 6 (December 25, 2015): 460–468. Accessed June 3, 2024. http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/601.