U. Kumtabtim, N. Sumree, K. Jitsai, and R. Hongkrengkai, “THE DEVELOPMENT OF PECTIN EXTRACTION PROCEDURE FROM WATERMELON PEEL USING ORGANIC ACID FOR FOOD INDUSTRY”, SWU (JS&T), vol. 15, no. 30, July-December, pp. 1–15, Article 251598, Nov. 2023.