Whether or not to include a reference is a very important issue, but here is why we have considered it last.
1. Most of the questions students ask us are about the mechanics of quoting and referencing, so we have put these at the front of the lesson.
2. In our view, however, deciding what needs to be referenced is the most important question. By ending with this issue foremost in your mind, you may be persuaded to think it over more effectively.