Septian, A. A., and A. Miftakhurrohmat. “The Effect of Weeding and Planting Distance on Growth and Production of Shallots (Allium Cepa.L)”. Nabatia, Vol. 7, no. 1, June 2019, pp. 11-18, https://nabatia.umsida.ac.id/index.php/nabatia/article/view/448.