Wongarn, R., N. Thamonsiri, S. Viboonyanon, N. Densupsoontorn, and P. Jirapinyo. “Dietary Patterns of Secondary-School Students at Grade VII and Grade X”. Siriraj Medical Journal, vol. 58, no. 4, Apr. 2006, pp. 751-3, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245811.