APOLLO, A. Peningkatkan Motivasi Belajar Ekonomi Melalui Model Problem based learning Berbantuan LKPD pada Kelas X SMAN 1 Simpang Dua, Kalimantan Barat. Jurnal Penelitian Inovatif, [S. l.], v. 3, n. 1, p. 73–88, 2023. DOI: 10.54082/jupin.139. Disponível em: https://www.jurnal-id.com/index.php/jupin/article/view/139. Acesso em: 18 jul. 2025.