งอิง อ้ document adun Sai Lek Tim. 2538 (1995). Compare achievement in writing, difficulty spelling of elementary students in grade. 1. the school affiliated with the Bureau of elementary education. Amphoe bang BUA thong, Nonthaburi. 36
amornrat probably complete. 2536 (1993). Comparison of ability and an interest in writing, difficulty of Thai language spelling students grade 3 teaching through games and quizzes. degree
orathai nut radut. 2540 (1997). To create a spell writing training for students in grade 4 to compare knowledge in reading. The ability to write and attitudes towards the Thai language learning of students, grade 6. Doctoral thesis air patrol (Thai language teaching). Bangkok:
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