Joni, Yohana, 		Kaleka, Melkyanus, AND 		Ika, Yasinta.
" APPLICATION OF PROBLEM-BASED LEARNING (PBL) LEARNING MODEL ON CLASS VIII STUDENT'S CRITICAL THINKING ABILITY STATE JUNIOR HIGH SCHOOL 6 BORONG" <em>ScienceEdu</em> [Online], Volume 4 Number 2 (18 December 2021)