A. Al-Munaifi, Abdulatif, and Soad A. Al-Sabban, translators. “Evaluation of the Efficiency of Wastewater Treatment Plants in Taiz City and Their Suitability for Irrigation”. Journal of Science and Technology, vol. 25, no. 1, Dec. 2020, pp. 1-22, https://doi.org/10.20428/jst.v25i1.1694.