Altruism Models In Islamic Consumption System. International Journal of Islamic Business and Economics (IJIBEC), [S. l.], v. 1, n. 2, p. 63–75, 2017. DOI: 10.28918/ijibec.v1i2.995. Disponível em: https://e-journal.uingusdur.ac.id/Ijibec/article/view/1879. Acesso em: 19 jul. 2026.