Noor, Z.; Prameswarie, L. P.; Fadilla, S. I.; Kemur, S. C. D.; Mustakim, A.; Musvirah, N. A.; Kemalaintan, N.; Fauziah, F. Implementation and Training of a VBA for Service Information System Using Waterfall Model: A Case Study of Laundry Hasanah. SJPKM 2026, 5, 1464-1481.