kuswara, didi. “THE DIFFERENCES OF LEARNING OUTCOMES BETWEEN STUDENT WHO ARE TAUGHT BY NUMBER HEAD TOGETHER (NHT) AND JIGSAW COOPERATIVE TECHNIQUE LEARNING METHOD IN CLASS VII JUNIOR HIGHT SCHOOL 1 GANGGA”. PENBIOS: JURNAL PENDIDIKAN BIOLOGI DAN SAINS, Vol. 1, no. 02, Nov. 2018, pp. 31-39, https://ejournal.unwmataram.ac.id/bios/article/view/73.