Santoso, Mohamad, et al. “Implementation of QIS (Qasiimatun) As A Secure Educational and Governance-Based Cashless Transaction System in The Madrasah Environment”. Jurnal Isema : Islamic Educational Management, vol. 11, no. 1, June 2026, pp. 1-11, doi:10.15575/isema.v11i1.55405.