Church Fabric Survey database
2013
Sources for Cambridge: St Botolph
N Chadwick (of geograph.org.uk)
Interior image of 614033 St Botolph, Cambridge
2016, October 01
Keltek Trust
Exterior image of 614033 St Botolph, Cambridge
2019, March 12
Church Buildings Council
Church Bells
2019
James Miles
Bell frames of historic importance
2019
Church of England
A Church Near You
2021