Book Review Index Online
Containing the entire backfile of Book Review Index print content from 1965 to the present, Book Review Index Online is a comprehensive online guide to book reviews with more than 5.6 million reviews on more than 2.5 million titles.
Access over university libraries only.

International Bibliography of Book Reviews (IBR)
A multilingual interdisciplinary index to book reviews published in scholarly journals, primarily in the social sciences and the humanities, including many European journals.
Access over university libraries only.