In publishing, the rules are usually set by the publication or publisher (if large enough to have a staff including style-proofreader personnel).

Some publishers have a style manual for guidance to writers and staff, e. g., Government of Canada, American Psychological Assn., Univ. Chicago, etc., etc. The NY Times has a set of rules, and several publishers have issued style manuals.
In the United States, "The Chicago Manual of Style" is recommended by many universities; it is in the 16th edition or thereabouts.

The submission should be clear and orderly, sticking to one format, easing the task of the publisher's staff.

Marje, I have poetry publications following both systems of centering; again, being consistent in submissions will help the publisher and ease conversion to his format.

PoppaGator, years ago I wrote papers involving a lot of scientific names for organisms; by nomenclatural rules, the names must be italicized, first letter of genus in caps, initial letter of species and subspecies lower case. Moreover, some scientific periodicals required all Latin words also be italicized. With the typewriter, and the later 'word processor', that involved a lot of underscoring and a hell of a lot of proofing. The computer has greatly simplified the task.