Periodicals Index Online (PIO)
Periodicals Archive Online (PAO)
https://search.proquest.com/pao/refurl/?accountid=60980
Acta Sanctorum:
http://acta.chadwyck.com/?inst
Patrologia Latina:
http://pld.chadwyck.co.uk/?instit1=Storici&instit2=welcome
Periodicals Index Online (PIO)
Periodicals Archive Online (PAO)
https://search.proquest.com/pao/refurl/?accountid=60980
Acta Sanctorum:
http://acta.chadwyck.com/?inst
Patrologia Latina:
http://pld.chadwyck.co.uk/?instit1=Storici&instit2=welcome