Cardinals.fiu.edu on Cardinal Costa:
https://cardinals.fiu.edu/bios2022.htm#Costa
Catholic-Hierarchy.org entry on Cardinal Costa:
https://www.catholic-hierarchy.org/bishop/bcescos.html
Gcatholic.org's entry on Cardinal Costa:
http://www.gcatholic.org/dioceses/diocese/bras0.htm?focus=46015&tab=bishops
Gcatholic.org's entry on Brazil:
http://www.gcatholic.org/dioceses/country/BR.htm
Image credit:
By Reinaldocampelo - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=123197564
