Many parents have asked me where they can get guidelines for MLA and APA formatting. Here are two websites that have easy to follow guide lines for both.
1. http://owl.english.purdue.edu/
2. http://www.aresearchguide.com/styleguides.html
There are also books on Amazon and at Barnes and Noble that are easy to follow and would be helpful in understanding formatting. Having a book on formatting with you at all times makes for an easy reference.
I suggest you begin teaching a specified format around 6th grade. I used MLA, but I think that either MLA or ABA is fine, because once a student learns one type of formatting it is easy to switch to another if it is required.
Happy Writing!
Judith