Lestari, P, H H Nurjanto, and E Faridah. “Preliminary Symptom of Teak (Tectona Grandis Lf.) As Response of Deficiency and Excessive of Macronutrient”. KnE Life Sciences 4, no. 11 (March 10, 2019): 255–261. Accessed August 14, 2020. https://knepublishing.com/index.php/KnE-Life/article/view/3871.