Ziyadatullah, M. Zidan, M Yusuf, and Hendra Sastrawinata. 2026. “The Influence of Digital Service Quality and the Usefulness of the Jamsostek Mobile (JMO) Application on Participant Satisfaction ”. Husnayain Business Review 6 (2):257-69. https://doi.org/10.54099/hbr.v6i2.1955.