Hafeez, M. ., Z. A. . Chatha, A. A. . Khan, A. . Bakhsh, A. . Basit, and F. . Tahira. “Estimating Reference Evapotranspiration by Hargreaves and Blaney-Criddle Methods in Humid Subtropical Conditions”. Current Research in Agricultural Sciences, vol. 7, no. 1, Apr. 2020, pp. 15-22, doi:10.18488/journal.68.2020.71.15.22.