Efendi , Johan, et al. “The Influence of Work Flexibility, Reskilling, and Upskilling on Nafs Al-Muṭma’innah Among Educators in Muhammadiyah Universities and Boarding Schools (PESMA)”. At-Ta’dib, vol. 21, no. 1, June 2026, pp. 155-72, doi:10.21111/at-tadib.v21i1.24.