HANG, N. T. M.; BICH, N. N.; HANH, L. T. T. FACTORS AFFECTING THE EFFECTIVENESS OF ENGLISH–MEDIUM INSTRUCTION PROGRAM IN MATHEMATICS EDUCATION: AN EFA–CFA STUDY. TEFLIN Journal, [S. l.], v. 36, n. 2, p. 228–249, 2025. DOI: 10.15639/teflinjournal.v36i2/228-249. Disponível em: https://journal.teflin.org/index.php/journal/article/view/3063. Acesso em: 18 may. 2026.