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Munawaroh B, Masruri MS. THE EFFECTIVENESS OF PROBLEM BASED LEARNING AND DISCOVERY LEARNING MODEL TOWARD LEARNING OUTCOME IN GEOGRAPHY ON STUDENTS WITH EXTERNAL LOCUS OF CONTROL. Geos. Ind. [Internet]. 2019 Apr. 29 [cited 2025 Aug. 15];4(1):56-62. Available from: https://geosfera.jurnal.unej.ac.id/index.php/GEOSI/article/view/9240