Astutik, Heny Sri. “Fostering Vocational Students’ Self-Confidence and Learning Interest in Mathematics Through ARCS-Based Instruction”. ETDC: Indonesian Journal of Research and Educational Review 5, no. 4 (July 27, 2026): 2582–2595. Accessed August 7, 2026. https://www.etdci.org/journal/ijrer/article/view/5524.