Author: Kānprachum Khana Kammakān Damnœ̄n Ngān læ Čhaonāthī phư̄a Prapprung Kānčhat Kānsưksā phư̄a Chumchon nai Khēt Phūkhao (Sō̜sō̜chō̜.) (1991 Sūn Kānsưksā nō̜k Rōngrīan Phāk Nư̄a Lampāng)