I would suggest contacting an attorney. Generally, an author can have a copyright in the work created, including the text, graphics and organization. Your use may be including copyrightable elements which without permission may subject you to liability for copyright infringement.
Answer Applies to: Kansas
The Table of Contents of a book would seem to qualify for copyright protection, though on-line book sellers make the table of contents available.
Answer Applies to: Ohio
In my view, listing the full table of contents could be deemed copyright infringement. Note, however, that many on-line booksellers list full table of contents
Answer Applies to: New York