Thongekkaew, Jantaporn, and Watcharin Teangtam. “Antioxidant Activity, Vitamin C and Total Phenolic Contents in Three Types of Lettuce Grown in Hydroponics and Soil-Based”. RMUTSB ACADEMIC JOURNAL 11, no. 2 (December 8, 2023): 186–198. Accessed May 21, 2024. https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/258465.