The trick is that the book is in three languages... layout becomes tricky fast. Any suggestions would be much appreciated.
What you're asking for is probably more suited to the TeX stack exchange; they've got a similar answer here, along with some template information. I think you'd be wise to look here before continuing.
The nice thing about LaTeX, however, is that the plain-text nature of it makes it easier to modify existing templates to suit your needs. So, maybe the link I included will point you to something you could use for this. The added benefit here is that you'll get some TeX practice while working on your book.