Canon 827. §1 Without prejudice to the provisions of can. 775 §2, the publication of catechisms and other writings pertaining to catechetical formation, as well as their translations, requires the approval of the local Ordinary.

§2 Books dealing with matters concerning sacred Scripture, theology, canon law, church history, or religious or moral subjects may not be used as textbooks on which the instruction is based, in elementary, intermediate or higher schools, unless they were published with the approbation of the competent ecclesiastical authority or were subsequently approved by that authority.

§3 It is recommended that books dealing with the subjects mentioned in §2, even though not used as basic textbooks, and any writings which specially concern religion or good morals, be submitted to the judgement of the local Ordinary.

§4 Books or other written material dealing with religion or morals may not be displayed, sold or given away in churches or oratories, unless they were published with the permission of the competent ecclesiastical authority or were subsequently approved by that authority.

§1. Catechismi necnon alia scripta ad institutionem catecheticam pertinentia eorumve versiones, ut edantur, approbatione egent loci Ordinarii, firmo praescripto can. 775, §2.

§2. Nisi cum approbatione competentis auctoritatis ecclesiasticae editi sint aut ab ea postea approbati, in scholis, sive elementariis sive mediis sive superioribus, uti textus, quibus institutio nititur, adhiberi non possunt libri qui quaestiones respiciunt ad sacram Scripturam, ad theologiam, ius canonicum, historiam ecclesiasticam, et ad religiosas aut morales disciplinas pertinentes.

§3. Commendatur ut libri materias de quibus in §2 tractantes, licet non adhibeantur uti textus in institutione tradenda, itemque scripta in quibus aliquid habetur quod religionis aut morum honestatis peculiariter intersit, iudicio subiciantur loci Ordinarii.

§4. In ecclesiis oratoriisve exponi, vendi aut dari non possunt libri vel alia scripta de quaestionibus religionis aut morum tractantia, nisi cum licentia competentis auctoritatis ecclesiasticae edita sint aut ab ea postea approbata.