Santosa, Edi, Indra Mario Stefano, Abdul Gani Gani Tarigan, Ade Wachjar, Sofyan Zaman, and and Herdhata Agusta. 2018. “Tree-Based Water Footprint Assessment on Established Oil Palm Plantation in North Sumatera, Indonesia”. Indonesian Journal of Agronomy 46 (1), 111-18. https://doi.org/10.24831/jai.v46i1.13665.