Author: Kānprachum Patibatkān rư̄ang Konlayut Kāndamnœ̄n Ngān Sāthāranasuk Mūnthān nai Phǣnphatthanā Kānsāthāranasuk Chabap thī 7, Phō̜. Sō̜. 2535-2539 (1989 Tak, Thailand)