Irenaeus Against Heresies 3.3. from Nicene and Post-Nicene Fathers, Ser. II, Vol. I, Phillip Schaff, ed., at ccel.org. 2: the "Church founded and organized at Rome by the two most glorious apostles, Peter and Paul; as also [by pointing out] the faith preached to men, which comes down to our time by means of the successions of the bishops. . . . The blessed apostles, then, having founded and built up the Church, committed into the hands of Linus the office of the episcopate."
Afanassieff, Nicola (1992). "La Chiesa che presiede nell'amore" in ' il primato di Peter: saggi nella ecclesiologia e precoce chiesa ', John Meyendorff, ed. New York. Cap. 4, pp. 126 – 127.
