Wambua, Judy, Shadrack Ngene, Nicholas Korir, Winnie Ntinyari, and Joseph Gweyi-Onyango. “Differential Biomass Accumulation Among African Leafy Vegetables As Affected by Wastewater Irrigation in Kitui County, Kenya”. International Journal of Plant & Soil Science 27, no. 6 (May 2, 2019): 1-7. Accessed February 29, 2020. http://www.journalijpss.com/index.php/IJPSS/article/view/30095.