Usually the process for ordering books is that you send them a PDF with embedded fonts inside it, and it's made at the university's printing house. They will handle distribution etc. So you really, really want it to look right at the first go.
There's been some progress the past few years now where you get to preview the book somewhat, but one surefire way to get it right is to use something like LaTeX. It used to be one of few WYSIWYG solutions out there. And it used to be really hard to do certain required things in e.g. Word. For instance skipping some page numbering and doing others in roman numerals etc.