Nderitu, J., G. Nyamasyo, M. Kasina, and M. L. Oronje. “Diversity of Sunflower Pollinators and Their Effect on Seed Yield in Makueni District, Eastern Kenya”. Spanish Journal of Agricultural Research 6, no. 2 (June 1, 2008): 271-278. Accessed May 2, 2025. https://sjar.revistas.csic.es/index.php/sjar/article/view/318.