SABA QAYYUM; DR. KAMRAN MOOSA. SERVICE QUALITY AND SUSTAINABLE CLIENT RELATIONSHIPS IN FREELANCING: AN EMPIRICAL STUDY USING THE SERVQUAL MODEL. JOURNAL OF SOCIAL RESEARCH DEVELOPMENT, [S. l.], v. 7, n. 8, p. 183–205, 2026. DOI: 10.59075/jsrd.v7i8.569. Disponível em: https://www.jsrd.org.pk/index.php/jsrd/article/view/569. Acesso em: 6 oct. 2026.