• (for Chronology of Bishops) Wikipedia:SPS| • (for Chronology of Bishops) Wikipedia:SPS| • {{Cite web|last=Cheney |first=David M.|authorlink=|title=Archdiocese of Köln {Cologne} |website=
Catholic-Hierarchy.org|date=|url=http://www.catholic-hierarchy.org/diocese/dkoln.html |accessdate=January 4, 2019}} (for Chronology of Bishops) Wikipedia:SPS| • (for Chronology of Bishops) Wikipedia:SPS|