Herlinda, H. et al. 2026. Islamic Social Entrepreneurship Approach to Strengthening the Spirit of Leadership: Quantitative Study of PTKIS Kopertais Region XII Riau. Attractive : Innovative Education Journal. 8, 3 (Sep. 2026), 133–146. DOI:https://doi.org/10.51278/aj.v8i3.2727.