Yanda, Y. S., F. Fahrurrozi, and S. Supanjani. “Growing Caisim (Brassica Juncea L.) Using Elaeisponic Production System”. Akta Agrosia, vol. 21, no. 2, Dec. 2018, pp. 29-32, https://ejournal.unib.ac.id/Agrosia/article/view/4566.