*[http://romanchurches.wikia.com/wiki/Main_Page Wikia:Roman Churches Wikia:Roman churches Main Page] - Creative Commons.
*[https://catholic.fandom.com/wiki/Roman_Catholicism_Wiki Catholic Wiki Main Page] - Creative Commons.
*[http://www.saintwiki.com/index.php?title=Main_Page Saint Wiki Catholic Main Page] - Creative Commons.
*[http://www.saintwiki.com/index.php?title=Catholic_Wikis Saint Wiki Catholic Catholic Wikis]
*[http://www.franciscan-archive.org/documenta.html Franciscan Catholic archive] - Public Domain up to and including 1921 document.
*[http://www.ccel.org/fathers.html Works of the Early Church Fathers] - Public Domain.