Can. 656
© Libreria Editrice Vaticana Source: vatican.va
§ 1. In celebrationibus liturgicis adhibeantur tantum libri approbatione ecclesiastica praediti.
§ 2. Libri precum vel devotionum ad usum publicum vel privatum christifidelium destinati indigent licentia ecclesiastica.
Wording unchanged since the Code took effect in 1991.
Read the whole title TITULUS XVDe Magisterio Ecclesiastico 595–666