Bintoro, Agung, Alben Ambarita, and Pargito Pargito.  . “DEVELOPMENT OF CONTROVERSIAL ISSUES-BASED STUDENT WORKSHEET TO IMPROVE STUDENT’S SOCIAL SKILL CLASS IV IN ELEMENTARY SCHOOL”. JIP (Jurnal Ilmiah PGMI) 7 (1), 77-86. https://doi.org/https://doi.org/10.19109/jip.v7i1.8751.