- What to know about the Society of St. Pius X, the schismatic group excommunicated by the Pope NPR
- Vatican Excommunicates Society of St. Pius X, in First Major Crisis for Pope Leo The New York Times
- Vatican excommunicates bishops of breakaway traditionalist sect The Washington Post
- Bishop urges Catholics to avoid Waunakee church tied to excommunicated group Channel 3000
- The pain of a rupture Vatican News