Church Fabric Survey database
2013
Sources for Holkham: St Withburga
CWGC
Commonwealth War Graves Commission
2016
Christopher Codling
626548_Holkham_StWithburga_Norwich_CHRplan
Augustus 2017
Christopher Codling
626548_Holkham_StWithburga_Norwich_CHRexterior
02/08/2017
Church Buildings Council
Church Bells
2019
Church of England
A Church Near You
2021
ICBS
Incorporated Church Building Society Archive
1817-1989