Kikuchi, H., D. Bundo, S. Izumiyama, and K. Kanazawa. “History of Coffee Farm Development With Local Communities and Wildlife in Ulu Baram, Sarawak”. Journal of Borneo-Kalimantan, vol. 11, no. 2, Dec. 2025, pp. 40-52, doi:10.33736/jbk.11027.2025.