Yulianto, Arief, et al. “ Examining The Effects of Task Complexity and Task Difficulty on Students’ Knowledge Retention: A Cognitive Load Theory Perspective”. Jurnal Kependidikan : Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran, Dan Pembelajaran, vol. 11, no. 4, Dec. 2025, pp. 1347-58, doi:10.33394/jk.v11i4.18326.