Canon 1489

1. Laws of the Apostolic See are promulgated by being published

in the official commentary Acta Apostolicae Sedis, unless another

form of promulgation is prescribed for special cases. They begin

to oblige after three months have elapsed from the date of that

issue of the Acta, unless because of the nature of the matter

they bind immediately or unless a shorter or a longer interval

has been expressly prescribed in the law itself. 2. Laws given

by other legislators are promulgated in the manner determined by

these legislators and begin to oblige from the date prescribed by

them.