CCEO
Canon 657 -
§1. The approval of liturgical texts, after prior review of the Apostolic See, is reserved in patriarchal Churches to the patriarch with the consent of the synod of bishops of the patriarchal Church, in metropolitan Churches sui iuris to the metropolitan with the consent of the council of hierarchs; in other Churches this right rests exclusively with the Apostolic See, and, within the limits set by it, to bishops and to their legitimately constituted assemblies.
§2. The same authorities are also competent to approve the translations of these books meant for liturgical use, after sending a report to the Apostolic See in the case of patriarchal Churches and metropolitan Churches sui iuris.
§3. To republish liturgical books or their translations intended even in part for liturgical use, it is required and suffices to establish their correspondence with the approved edition by an attestation of the hierarch referred to in can. 662, §1.
§4. In making changes in liturgical texts, attention is to be paid to can. 40, §1.
Canon 662 - §1. Ecclesiastical approval or permission to publish books may be granted, unless expressly stated otherwise in the law, either by the author’s own local hierarch or by the hierarch of the place of publication, or finally by a superior authority having executive power over these persons or places.
Canon 40 - §1. Hierarchs who preside over Churches sui iuris and all other hierarchs are to see most carefully to the faithful protection and accurate observance of their own rite, and not admit changes in it except by reason of its organic progress, keeping in mind, however, mutual goodwill and the unity of Christians.