Book form.

There have only been two Catechisms of the entire Catholic Church in its 2000 year history: The "Catechism of the Council of Trent" (1566 AD), and the "Catechism of the Catholic Church" (1997). The Holy See owns the copyright.

The Catechism of the Catholic Church, abbreviated to The Catechism or CCC, is the official and universal catechism (or catechetical text) of the Catholic Church.Cite error: Closing </ref> missing for <ref> tag.