ไกรสังข์ จ., P. Temcharoen, and S. Seubsaman. “Effectiveness of Using Handbook With Traffic Light for Food Groups in a Medical Nutrition Therapy on Knowledge, Food Consumption Behavior and Blood Sugar Levels of Diabetic Patients in Nong Bua Hospital, Nong Bua District, Nakhon Sawan Province”. Journal of Disease and Health Risk DPC.3, vol. 15, no. 2, Aug. 2021, pp. 5-20, https://he01.tci-thaijo.org/index.php/JDPC3/article/view/246027.