Nurhafiza, Nurhafiza, and Armiati Armiati. “Motivasi Belajar Siswa Kelas XI Melalui Model Pembelajaran Problem Based Learning Berbantuan Media Powtoon Di SMA Pertiwi 1 Padang”. Innovative: Journal Of Social Science Research, vol. 3, no. 6, Dec. 2023, pp. 6024-3, https://j-innovative.org/index.php/Innovative/article/view/7229.