Author: Samnakngān Phatthanā Witthayāsāt læ Thēknōlōyī hǣng Chāt (Thailand). Khrōngkān Songsœ̄m Phūmī Khwāmsāmāt Phisēt læ Songsœ̄m ʻĀchīp Nakwičhai