Kanokporn Jansiharat และ Chuthaphon Masantiah; Darunee Tippayakulpairoj. (2023) Construction of Mixed-Format Tests in Mathematics Online Testing on Fractions for Grade 6 Students: an Application of One-Parameter Item Response Theory. <i>Interdisciplinary Academic and Research Journal</i>, <i>3</i>(3), 725-738.Kanokporn Jansiharat และ Chuthaphon Masantiah; Darunee Tippayakulpairoj. "Construction of Mixed-Format Tests in Mathematics Online Testing on Fractions for Grade 6 Students: an Application of One-Parameter Item Response Theory". Interdisciplinary Academic and Research Journal 3 (2023):725-738.Kanokporn Jansiharat และ Chuthaphon Masantiah; Darunee Tippayakulpairoj. Construction of Mixed-Format Tests in Mathematics Online Testing on Fractions for Grade 6 Students: an Application of One-Parameter Item Response Theory. DR.KEN Institute of Academic Development and Promotion:ม.ป.ท. 2023.