25.19. and 25.23. General Rule and Parts of Liturgical Works
In general, use as a uniform title for both a liturgical work and its parts a title that is in the language of the liturgy. For the main title of a liturgical work entered under body established in an English form and for all parts of a liturgical work, restrict the use of an English title to the most famous liturgical works already represented by a fixed English title appearing in bibliographic descriptions on existing bibliographic records.
See also:
