Citations for books and book chapters are not tracked as well as journal articles. In some disciplines, book reviews (and where those reviews were published) may be more important than cited references. These tools may be more useful than the traditional cited reference tools.
The new Book Citation Index tracks citations to books and book chapters in the journals indexed by Web of Science.
WorldCat will list libraries around the world that hold copies of books. Comparisons if these holdings with similar books can provide a measure of impact of the publication.
This listing of book review databases can assist with collecting reviews of a given book.