I certainly appreciate your politeness. You're welcome to use whatever material from Mythic Earth that you want. As for pointing to pages in the original book, if you could perhaps put a simple sentence to the effect of, "This book uses the magic system of
Elements of Magic - Mythic Earth, available from E.N. Publishing," and then have a link to
www.enworld.org/enpublishing, then I'd be all for you using the rules, and I'll even announce that you'd be the first publisher to use Mythic Earth, and point some folks your way.
Sound good?