Sergius I (Norwegian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sergius I" in Norwegian language version.

refsWebsite

Global rank Norwegian rank

2books.google.com

3^rd place

36^th place

books.google.com

Frank N Magill, Alison Aves, Dictionary of World Biography (Routledge 1998 ISBN 978-1-57958041-4), vol. 2, s. 823–825
Wilfried Hartmann, Kenneth Pennington (editors), The History of Byzantine and Eastern Canon Law to 1500 (CUA Press 2012 ISBN 978-0-81321679-9), p. 79