Kuncoro, K.S., Kusumaningrum, B., Agustito, D., Meirani, F. and Lestari, E.S. 2023. Mathematical communication skills in the context of linear equations: A study on students’ proficiency and self-esteem. Psychology, Evaluation, and Technology in Educational Research. 6, 1 (Aug. 2023), 18–34. DOI:https://doi.org/10.33292/petier.v6i1.178.