Kasemsap, S., Sagnaundhart, D. and Karnchanachareun, D. (1990) “Cost and Return on Investment of Lotus Cultivation for Cut Flower”, Kasetsart Journal of Social Sciences, 11(1), pp. 26–31. available at: https://so04.tci-thaijo.org/index.php/kjss/article/view/243970 (accessed: 13 September 2026).