Pinardi, J., W. Punding, Suparman, dan A. Subagjo. “IDENTIFICATION OF STUDENT ERRORS IN SOLVING DERIVATIVE PROBLEMS IN SMA NEGERI 3 PALANGKA RAYA”. JURNAL PENDIDIKAN, vol. 22, no. 1, Juni 2021, hlm. 37-43, doi:10.52850/jpn.v22i1.2793.