SYNERGIZING PROBLEM-BASED LEARNING AND AI TOOLS: A LONGITUDINAL STUDY ON SPEAKING PROFICIENCY AT THE B2 LEVEL. Qo‘qon DPI. Ilmiy xabarlar jurnali 2026, 8 (5.), 1487-1491. https://doi.org/10.70728/c.series.ped.v08.i05.236.