SAVI, J. Will, Knowledge, and Love as Explained in Bahá’u’lláh’s Four Valleys. The Journal of Bahá’í Studies, Ottawa, Ontario, Canada, v. 6, n. 1, p. 17–33, 1994. DOI: 10.31581/jbs-6.1.2(1994). Disponível em: https://journal.bahaistudies.ca/online/article/view/81. Acesso em: 28 nov. 2021.