Wanida Homjan และ Suchart Homjan. (2020) Mathematics Basic Diagnostic Test Development for Primary Students, Grade 4, Surin Primary Educational Service Area Office 3. <i>Journal of Humanities and Social Sciences</i>, <i>39</i>(4), .83-94.Wanida Homjan และ Suchart Homjan. "Mathematics Basic Diagnostic Test Development for Primary Students, Grade 4, Surin Primary Educational Service Area Office 3". Journal of Humanities and Social Sciences 39 (2020):.83-94.Wanida Homjan และ Suchart Homjan. Mathematics Basic Diagnostic Test Development for Primary Students, Grade 4, Surin Primary Educational Service Area Office 3. mahasarakham university:ม.ป.ท. 2020.