Fitri, D., and A. Arlina. “The Effect of the Number Heads Together (NHT) Learning Model on Critical Thinking in Geography Subjects at SMA Angkasa 1 Jakarta”. Edumaspul: Jurnal Pendidikan, Vol. 7, no. 2, Oct. 2023, pp. 3685-91, doi:10.33487/edumaspul.v7i2.6434.