Sihombing, Humiras Betty Marlina, Sherly, Edy Dharma, Desmalia Purba, and Kisno. 2023. “Training and Working Environment on Science Teachers’ Performance ”. Jurnal Penelitian Pendidikan IPA 9 (8):6458-64. https://doi.org/10.29303/jppipa.v9i8.3300.