I know you have to indicate that all the disney related items mentioned in the book are registered trademarks of the Walt Disney Company, All rights reserved, you can do this in the credits of the book for each chapter. It is also Usually noted on the ISBN Page with your copyright data. You publisher should be able to help with any other copyright clearance issues or Royalty issues that may arise with the publication. If you self publish, then you will need to work directly with a Copyright Clearance house to pay any royalty that you could owe for using disney's trademark to earn money for publishing your book.
I would work with a lawyer specializing in copyrights if you choose to self publish.