Easton, Matthew George. «Gifts, spiritual». www.ccel.org. Easton's Bible Dictionary. Consultado el 1 de agosto de 2023.
doi.org
dx.doi.org
Kavan, Heather (2013). «A psychodynamic interpretation of gender differences in descriptions of religious visions». The International Journal of Religion and Spirituality in Society: 77-87. doi:10.18848/2154-8633/CGP/v02i02/50994.