Umbara, Dona Setia, and Ulpah Jakiyah. “Technical Efficiency and Production Determinants of Household-Scale Grape Farming in an Agritourism Village of Ciganjeng, Pangandaran, Indonesia”. Agro Bali : Agricultural Journal, vol. 8, no. 3, Nov. 2025, pp. 1080-93, doi:10.37637/ab.v8i3.2553.