Ugulumu, Enock S., and Eno L. Inanga. “Tanzania’s Small-Scale Sunflower Farmers: Upgrading the Value Chain”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 10, no. 1 (December 12, 2013): 126–145. Accessed December 29, 2025. https://gssrr.org/JournalOfBasicAndApplied/article/view/1339.