Warniasih, Kristina, Savitri Nur Indahsari, and Victor Novianto. “Analysis of Level of Academic Procrastination on Mathematics Assignments”. Research and Innovation in Social Science Education Journal (RISSEJ) 2, no. 1 (July 16, 2024): 25–33. Accessed March 9, 2026. https://ejournal.ump.ac.id/rissej/article/view/165.