Sihotang, Indah Rosari, et al. “Peranan Kelompok Tani Terhadap Peningkatan Pengetahuan Petani Jagung Di Nagori Pariksabungan Kecamatan Dolok Pardamean Kabupaten Simalungun”. Innovative: Journal Of Social Science Research, vol. 3, no. 5, Oct. 2023, pp. 6453-65, https://j-innovative.org/index.php/Innovative/article/view/5618.