Pope Gregory IX (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pope Gregory IX" in Simple English language version.

refsWebsite

Global rank Simple English rank

471^st place

72^nd place

1books.google.com

3^rd place

2^nd place

books.google.com (Global: 3^rd place; Simple English: 2^nd place)

Society for the Diffusion of Useful Knowledge. (1838). "Gregory IX," Penny cyclopaedia, Vol. 11, p. 446.

newadvent.org (Global: 471^st place; Simple English: 72^nd place)

"List of Popes," Catholic Encyclopedia (2009); retrieved 2013-4-8.
"Pope Gregory IX," Catholic Encyclopedia; retrieved 2013-4-8.