Aelred, v. R., Dutton, M. L., & Braceland, L. C. (2010). Spiritual friendship. Cistercian fathers series.
Cita Chicago Style (17a ed.)Aelred, von Rievaulx, Marsha L. Dutton, y Lawrence C. Braceland. "Spiritual Friendship." Cistercian Fathers Series 2010.
Cita MLA (8a ed.)Aelred, von Rievaulx, et al. "Spiritual Friendship." Cistercian Fathers Series, 2010.
Precaución: Estas citas no son 100% exactas.