“Rancang Bangun Drone Quadcopter Tanpa Awak Penyiram Pupuk Tanaman”. Jurnal ELEMENTER (Elektro dan Mesin Terapan) 6, no. 2 (November 30, 2020): 81–90. Diakses September 19, 2026. http://slashroot.id/index.php/elementer/article/view/4396.