The main periodical index for psychology, PsycINFO, selectively indexes book reviews. Try Social Sciences Abstracts and Web of Science: Social Sciences Citation Index as well.
Provides access to international literature in psychology and related disciplines. To find reviews, use the "Advanced Search" screen and enter the title or author's name. Then use the "Search options" to limit by "Record type" and choose "Review-book." Coverage: 1806 - present