* {{cite book | last=Glenn | first=H. Patrick | title=Legal Traditions of the World | publisher=Oxford University Press, USA | publication-place=Oxford ; New York | date=2007 | isbn=0-19-920541-8 | oclc=ocm76360711}}
<ref name="d523">{{cite book | last=Glenn | first=H. Patrick | title=Legal Traditions of the World | publisher=Oxford University Press, USA | publication-place=Oxford ; New York | date=2007 | isbn=0-19-920541-8 | oclc=ocm76360711 | page=}}</ref>