We will enter your manuscripts in major contests and seek reviews in major book review publications. (castlegatepress.com)
One such third party book review source is professional book review publications whose primary readership is mostly composed of booksellers and librarians who are looking to stock books that would be read by many. (publishdrive.com)
You might also consider writing for a dedicated book review publication whose sole purpose is reviewing books. (thebalancesmb.com)