Narafidya, A., J. Sumarsono, S. Haji Abdullah, and G. N. De Side. “Application of The Sub-Surface Drip Irrigation System For Cellery (Apium Graveolens L.) Using Thread Hose on Sandy Clay Soil”. J-AGENT (Journal of Agricultural Engineering and Technology), Vol. 2, no. 1, Nov. 2023, pp. 22-29, https://journal.unram.ac.id/index.php/agent/article/view/3100.