Dewanti, Saraswati Kurnia, et al. “Growth and Yield of Kale (Brassica Oleracea Var. Acephala) on Different Vermicompost Dosages and Plant Spacings”. Jurnal Online Pertanian Tropik, vol. 6, no. 3, Dec. 2019, pp. 394-02, doi:10.32734/jopt.v6i3.3178.