@Book{BVMC:619734,
author = {Gregorio I, Papa, Santo},
title = {Liber pastoralis Divi Gregorij Magni Pontificis Summi Sanctaeque Ecclesiae Doctoris},
url = {https://www.cervantesvirtual.com/obra/liber-pastoralis-divi-gregorij-magni-pontificis-summi-sanctaeque-ecclesiae-doctoris}
}