Parnsakhorn, S., and J. Langkapin. “Effect of Different Rice Varieties on Changes in Anthocyanin Content and Physical Properties of Zongzi Products”. Frontiers in Engineering Innovation Research, vol. 20, no. 2, Dec. 2022, pp. 59-70, https://ph01.tci-thaijo.org/index.php/jermutt/article/view/247654.