Yutthasāt kānphatthanā čhangwat sưksā chaph̨o k̨ōranī čhangwat Sukhōthai - Kīattiphan N̨ōimanī (Witthayālai P̨ōngkan Rātchaʻanāčhak, Sathāban Wichākān P̨ōngkan Prathet, 1994)