Mugendi, D., M. Kanyi, J. Kung’u, W. Wamicha, and J. Mugwe. “The Role of Agroforestry Trees in Intercepting Leached Nitrogen in the”. East African Agricultural and Forestry Journal, Vol. 69, no. 1&2, Sept. 2008, p. 12, https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/50.