Chiradej Chamswarng, and Wanwilai Gesnara. “Production and Qualitative Test of Powder Formulation of Trichoderma harzianum”. Agriculture and Natural Resources, vol. 25, no. 2, June 1991, pp. 169-76, https://li01.tci-thaijo.org/index.php/anres/article/view/241963.