Midthongkam M, Pakapol P. The Effect of Using Model – Lead – Test Instruction with Picture Books to Develop Toothbrushing Skill of Students with Intellectual Disabilities at the Fundamental Level. JBER [internet]. 2024 Dec. 31 [cited 2025 Apr. 29];10(4):321-35. available from: https://so06.tci-thaijo.org/index.php/jber/article/view/279552