Wachjuni, D., M. Ulpah, and B. A. Pribadi. “Comparison of Pedagogical and Professional Competencies of Certified and Uncertified Teachers in State Elementary Schools”. INSANIA : Jurnal Pemikiran Alternatif Kependidikan, vol. 27, no. 1, June 2022, pp. 82-94, doi:10.24090/insania.v27i1.6419.