* {{cite book | last=Davies | first=R. R. | title=The Age of Conquest | publisher=Oxford University Press, USA | publication-place=Oxford ; New York | date=1991 | isbn=0-19-820198-2}}
<ref name="z690">{{cite book | last=Davies | first=R. R. | title=The Age of Conquest | publisher=Oxford University Press, USA | publication-place=Oxford ; New York | date=1991 | isbn=0-19-820198-2 | page=}}</ref>