Catholic Encyclopedia - St. Joseph Calasanctius, priest, founder of the Piarists, d. 1648. www.newadvent.org/cathen/08518d.htm
Patron Saints Index - Profile of St. Joseph Calasanz. www.catholic-forum.com/saints/saintj28.htm
Vietnamese Eucharistic Youth Society - The stories of St. Louis and of St. Joseph Calasanz, who share a feast day. Suitable for children. www.tntt.org/vni/tlieu/saints/St0825.htm
