* {{cite book | last=Justice | first=Universal House of | last2=Staff | first2=Universal House of Justice | title=The Baha'i World | publisher=Bahá'í world centre | publication-place=Haifa, Israel | date=1993 | isbn=0-85398-234-1}}
<ref name="s597">{{cite book | last=Justice | first=Universal House of | last2=Staff | first2=Universal House of Justice | title=The Baha'i World | publisher=Bahá'í world centre | publication-place=Haifa, Israel | date=1993 | isbn=0-85398-234-1 | page=}}</ref>