Tengku, S., K. S. . Lubis, S. D. Sari, and B. hidayat. “Effect of Chitosan and Biovermi Application on the Growth of Cherry Tomatoes (Lycopersicum Esculentum Mill, Var. Cerasiforme).”. Jurnal Online Pertanian Tropik, vol. 7, no. 1, Apr. 2020, pp. 56-63, doi:10.32734/jopt.v7i1.3235.