Re:Let CSS work for you! (Score 1)

It's HTML. You use a named anchor (#) link.

...Which works fine as long as you are in HTML... but what about citations? There has to be some sort of portable way to reference specific portions of the document no matter where it is printed or accessed.

An anchor link isn't typically visible (though you could make it so - with a section number for instance ;-) and as such is not portable to other media.