Hariandi, Yusuf, and Dianta Ginting. “Design Of Automatic Citrus Fertilizer Irrigation System Based On Photocell Timer”. Jurnal Teknik Mesin (Journal Of Mechanical Engineering) 14, no. 3 (October 31, 2025): 206–218. Accessed May 28, 2026. https://training-ojs3-publikasi.mercubuana.ac.id/index.php/jtm/article/view/36465.