E. P. Bikelenke, E. . Zakayo, and F. Senga, “Economic Drivers Influencing Oil Palm Farmers’ Decision to Sell Fresh Fruit Bunches Instead of Processing in Kigoma District, Tanzania”, RPJ, vol. 27, no. 1, pp. 70–79, Aug. 2025, doi: 10.59557/rpj.27.1.2025.147.