SIAHAAN, M. .; CHRISTIANI, D. . THE EFFECT OF PRICES AND PROMOTIONS ON PURCHASE DECISIONS AT SHOPEE: CASE STUDY OF BHAYANGKARA UNIVERSITY JAKARTA RAYA. International Journal of Economy, Education and Entrepreneurship (IJE3), [S. l.], v. 1, n. 3, p. 253–268, 2021. DOI: 10.53067/ije3.v1i3.35. Disponível em: https://ije3.esc-id.org/index.php/home/article/view/35. Acesso em: 7 oct. 2025.