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Ocy DR, Sarifah I, Riyadi R. EFA and CFA analysis: Development and validation of a test instrument for mathematical abstraction skills . J.Res.Adv.Math.Educ [Internet]. 2025 Apr. 30 [cited 2025 Nov. 17];10(2):101-19. Available from: https://journals2.ums.ac.id/jramathedu/article/view/7601