Mehrabkhani, R. (1987). «Capítulo 23». Mulla Husayn: Disciple at Dawn(en inglés). p. 243. Consultado el 7 de junio de 2010. «The scarcity of water has distressed our companions. God willing, this very night a downpour of rain will overtake our opponets, followed by a heavy snowfall which will assit us to repulse their contemplated assault ... As Quddús had predicted, on the second night, snow fell.»
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Hartz, Paula; Joanne O'Brien y Martin Palmer (2009). Baha'i Faith(en inglés). Infobase Publishing. pp. 33-35. ISBN1604131047.La referencia utiliza el parámetro obsoleto |coautores= (ayuda)