A. Sigar, Y. Susetyo, R. Mustikasari, B. Simanjuntak, A. Setiawan, and D. Banjarnahor, “Soil Carbon Stocks in Irrigated Paddy Fields, Rainfed Paddy Fields, and Upland Farms in the Upper Tuntang Sub-Watershed”, jpt, vol. 13, no. 2, pp. 255-270, Dec. 2025.