Darmayanti, Rani. “Gema Cow-Pu: Development of Mathematical Crossword Puzzle Learning Media on Students’ Critical Thinking Ability”. Assyfa Learning Journal 1, no. 1 (January 20, 2023): 37–48. Accessed June 10, 2026. https://journal.assyfa.com/index.php/alj/article/view/1.