Riyanti, U. et al. 2018. KEEFEKTIFAN LKS CROSSWORD PUZZLE DENGAN MODEL TEAMS GAMES TOURNAMENT TERHADAP HASIL BELAJAR IPS DI KELAS V SD. JS (JURNAL SEKOLAH). 2, 3 (Jun. 2018), 151–155. DOI:https://doi.org/10.24114/js.v2i3.9901.