Bamiro NB, Zakariya Z, Yahya LO, Mohammed AO. Enhancing economics education through phenomenography, variation theory, and multiple representations. Jurnal Pendidikan Teknologi dan Kejuruan [Internet]. 2024 Oct. 30 [cited 2025 May 14];30(2):259-74. Available from: https://jurnal.uny.ac.id/index.php/jptk/article/view/72900