“Identification of Nutrient Nitrogen in the Leaves of Soybean Plants Using ANFIS Based On Soybean Leave Colour”. JEECS (Journal of Electrical Engineering and Computer Sciences) 1, no. 2 (December 30, 2016): 119–123. Accessed March 16, 2026. https://ejournal.ubhara.ac.id/index.php/jeecs/article/view/173.