Catholic Church. United States Conference of Catholic Bishops & Catholic Church. United States Conference of Catholic Bishops. Committee on Catechesis. (2005). National directory for catechesis. United States Conference of Catholic Bishops.
Lua i Stíl Chicago (17ú heag.)Catholic Church. United States Conference of Catholic Bishops agus Catholic Church. United States Conference of Catholic Bishops. Committee on Catechesis. National Directory for Catechesis. Washington, D.C.: United States Conference of Catholic Bishops, 2005.
Lua MLA (8ú heag.)Catholic Church. United States Conference of Catholic Bishops agus Catholic Church. United States Conference of Catholic Bishops. Committee on Catechesis. National Directory for Catechesis. United States Conference of Catholic Bishops, 2005.