I'm never clear what a children's book is. Look at the 5 NOVELS collection, and see what you think. But there's an incredibly hard-to-find novel, THE AFTERLIFE DIET, (which may still be floating around the web, so have a look); two collections of my stupid essays, mostly from NPR, FISHWHISTLE, and CHICAGO DAYS, HOBOKEN NIGHTS...those are for adults, nominally. And I owe a book to Simon and Schuster, tentatively entitled, MY TOOTH IS QUICK...still needs to be worked on. I personally don't distinguish much, except stuff for adults has to be easier to understand.