Catholic Encyclopedia - St. Apollinaris Claudius, second-century bishop of Hierapolis, apologist. www.newadvent.org/cathen/01617b.htm
Catholic Online - Brief hagiography of St. Apollinaris. saints.catholic.org/saints/apollinaris.html
For All the Saints - Short biography of St. Apollinaris of Hierapolis, also known as Apollinaris the Apologist. users.erols.com/saintpat/ss/0108.htm#apol
