Tirkaamiasa, T. and Sofianti, E. 2024. Development of the Secretariat Information System and Membership of the Tapak Suci Putera Muhammadiyah Using E-R Diagrams. Formosa Journal of Computer and Information Science. 3, 2 (Aug. 2024), 91–112. DOI:https://doi.org/10.55927/fjcis.v3i2.11060.