Anggraini, Linda, Shinta Wulandari, and Nurmala Nurmala. 2022. “Errors of Class VIII Junior High School Students in Solving Mathematical Communication Problems Based on the Newman Procedure”. Journal of Education and Learning Mathematics Research (JELMaR) 3 (2), 103-8. https://doi.org/10.37303/jelmar.v3i2.80.