{{sfn|Allen|1979|p=}}

* {{cite book | last=Allen | first=Peter | title=The Cambridge Apostles | publisher=Cambridge University Press | publication-place=Cambridge | date=1979-01-12 | isbn=978-0-521-21803-0}}

<ref name="f572">{{cite book | last=Allen | first=Peter | title=The Cambridge Apostles | publisher=Cambridge University Press | publication-place=Cambridge | date=1979-01-12 | isbn=978-0-521-21803-0 | page=}}</ref>