C. H., M., M. F. L., M. O.H., K. S.K., N. P.N.M., S. I., and G. J. “The Effect of Integrated Soil Fertility Management Practices on Bell Pepper Under Controlled Environmental Conditions”. East African Agricultural and Forestry Journal, Vol. 87, no. 1 & 2, Jan. 2023, p. 6, https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/613.