Wulan, Endah Nawang, et al. “Identification of Student Errors in Solving Problems on the Limit of Algebra Functions in Class XI SMAN 4 Palangkaraya”. GAMAPROIONUKLEUS, vol. 1, no. 2, Apr. 2021, pp. 95-106, doi:10.37304/jpmipa.v1i2.2587.