erlina, ririt, 		na'im, mohammad, AND 		Puji, Rully Putri Nirmala.
" IMPLEMENTATION OF PROBLEM BASED LEARNING WITH AUDIO VISUAL TO IMPROVE CRITICAL THINGKING AND LEARNING OUTCOMES OF HISTORICAL SUBJECTS" <em>JURNAL HISTORICA</em> [Online], Volume 4 Number 1 (3 June 2020)