วิริยะสืบพงศ์ เ. “TO DEVELOP CULTURAL BELIEF OF SELF-SUFFICIENCY BY USING DELPHI TECHNIQUE”. RMUTT Global Business and Economics Review, vol. 10, no. 1, June 2015, pp. 91-106, https://so03.tci-thaijo.org/index.php/RMUTT-Gber/article/view/242034.