• ---. “Irrigation: Drip or Microirrigation”. U.S. Geological Survey, 6 Nov. 2018, https://www.usgs.gov/special-topics/water-science-school/science/irrigation-drip-or-microirrigation?qt-science_center_objects=0.
• Chu, Jennifer. “Watering the World”. MIT News | Massachusetts Institute of Technology, 17 Apr. 2017, https://news.mit.edu/2017/design-cuts-costs-energy-drip-irrigation-0420.
• Dunn, Elizabeth G. “A Tiny Piece of Plastic Is Helping Farmers Use Far Less Water”. Bloomberg.Com, 23 Sept. 2021. www.bloomberg.com, https://www.bloomberg.com/news/features/2021-09-23/how-microdrip-irrigation-systems-use-less-water-and-could-change-farming-forever.
• García, Laura, et al. “IoT-Based Smart Irrigation Systems: An Overview on the Recent Trends on Sensors and IoT Systems for Irrigation in Precision Agriculture”. Sensors, vol. 20, no. 4, Feb. 2020, p. 1042. DOI.org (Crossref), https://doi.org/10.3390/s20041042.
• ICID. “World Irrigated Area”. International Commission on Irrigation and Drainage, https://icid-ciid.org/inner_page/162. Accessed 30 Dec. 2021.
• Reich, D., et al. Fact Sheet: Subsurface Drip Irrigation (SDI) - 4.716. Colorado State University Extension, 2014, p. 3, https://extension.colostate.edu/topic-areas/agriculture/subsurface-drip-irrigation-sdi-4-716/.