SINGH, Uma Shankar; SAHIN, Osman. Measuring the Effectiveness of Sales Promotion Activities on Brand Loyalty: A Study on COCA COLA. International Journal of Social Sciences & Educational Studies, [S. l.], v. 3, n. 3, p. 159–173, 2017. DOI: 10.23918/ijsses.v3i3p159. Disponível em: https://www.ijsses.tiu.edu.iq/index.php/ijsses/article/view/551. Acesso em: 16 apr. 2026.