SAAD MOIN; HAMMAD ZAFAR; SYEDA NAZNEEN WASEEM. DO SOCIAL MEDIA MARKETING ACTIVITIES PROMOTE CUSTOMER LOYALTY? THE MEDIATING ROLE OF CUSTOMER ENGAGEMENT AND BRAND TRUST: A STUDY OF THE E-COMMERCE INDUSTRY IN KARACHI, PAKISTAN. JOURNAL OF SOCIAL SCIENCES DEVELOPMENT, [S. l.], v. 5, n. 4, p. 107–136, 2026. DOI: 10.59075/jssd.v5i4.298. Disponível em: https://www.jssd.org.pk/index.php/jssd/article/view/298. Acesso em: 7 oct. 2026.