รัฐฉัตรานนท์ วัลลภ. “Future Research Using Delphi Technique”. Thai Interdisciplinary and Sustainability Review 8, no. S (June 1, 2019): 1–10. accessed September 14, 2026. https://so03.tci-thaijo.org/index.php/JIRGS/article/view/243620.