ยิ่งสง่า ป., and มัทธุรศ ล. “YELLOWING DEVELOPMENT OF CHINESE KALE (Brassica oleracea var. alboglabla)”. Research Journal Phranakhon Rajabhat : Science and Technology, vol. 14, no. 1, Sept. 2018, pp. 76-90, https://li01.tci-thaijo.org/index.php/PRRJ_Scitech/article/view/135148.