Lenina Olin et al. 2026. Public Service Quality: A Study on the Integrated Police Service Center (SPKT) at Polres Metro Jakarta Pusat (SERVQUAL). Al-Kharaj: Journal of Islamic Economic and Business. 8, 2 (Jun. 2026). DOI:https://doi.org/10.24256/kharaj.v8i2.10195.