Santyasa, I. W., I. N. Kanca, I. W. S. Warpala, and I. K. Sudarma. “Group Investigation and Explicit Learning Models in Learning Physics at Senior High Schools”. Jurnal Penelitian & Pengembangan Pendidikan Fisika, Vol. 5, no. 2, Dec. 2019, pp. 203 -16, doi:10.21009/1.05216.