Jumaria Nasution, and Romaya Sitha Silitonga. “The Effect Cytokinin Aplication and Kosarmas Fertilizer on Rice Seed Filling Impari Sembilan in Pintupadang”. Jurnal Online Pertanian Tropik, vol. 7, no. 1, Apr. 2020, pp. 94-97, doi:10.32734/jopt.v7i1.3243.