journal, king prajadhipok’s institute. “King Prajadhipok’s Institute Journal (May 2018 - August 2018)”. King Prajadhipok’s Institute Journal, vol. 16, no. 2, Aug. 2020, pp. 1-135, https://so06.tci-thaijo.org/index.php/kpi_journal/article/view/243985.