The liturgical book “Holy Communion and the Worship of the Eucharist Outside of Mass” is perhaps more universal. There is a Latin edition, with a decree of 21 June 1973.
In 1988 the Directory for Sunday Celebrations in the Absence of a Priest was published. It outlines the ceremony and then has: “41. … The conference of bishops, or the individual bishop himself, may, in view of the conditions of the place and the people involved, determine more precisely the details of the celebration, using resources prepared by the national or diocesan liturgical committee, but the general structure of the celebration should not be changed unnecessarily.”
So every diocese can have a book of instructions reflecting how the bishop wants the ceremony conducted. But the 1988 Directory has in n. 46 “For the communion rite the provisions given in The Roman Ritual for communion outside Mass are to be observed. [footnote 38 See The Roman Ritual, Holy Communion and Worship of the Eucharist outside of Mass, ch.1: DOL 266. nos. 2092-2103].”
So to be sure things are happening properly on a Sunday you may need both books.