POYER, L. The Role of Material Goods in Spiritual Development. The Journal of Bahá’í Studies, Ottawa, Ontario, Canada, v. 1, n. 3, 1989. DOI: 10.31581/jbs-1.3.5(1989). Disponível em: https://journal.bahaistudies.ca/online/article/view/15. Acesso em: 26 sep. 2021.