Handayani, E. 2021. APPLICATION OF GROUP INVESTIGATION METHODS (GROUP INVESTIGATION) STUDENTS SD SWASTA TUNAS BANGSA SAMBIREJO TIMUR DISTRICT PERCUT SEI TUAN. REKOGNISI : Jurnal Pendidikan dan Kependidikan (E-ISSN 2599-2260). 6, 1 (Jun. 2021), 36–45.