NUZUL, AHMAD. 2014. “CONTEXTUAL TEACHING AND LEARNING EFECTIVITY FOR INCREASING ABILITY OF OPEN ECONOMIC UNDERSTANDING EFEKTIVITAS CONTEXTUAL TEACHING AND LEARNING DALAM MENINGKATKAN KEMAMPUAN MEMAHAMI PEREKONOMIAN TERBUKA”. Jurnal Pendidikan Ekonomi Dan Bisnis (JPEB) 2 (2):27-39. https://doi.org/10.21009/JPEB.002.2.2.