If the book is still in print, consider asking the publisher about images of the book. I imagine that a small publisher would be honored and pleased to get a book reviewed and would go out of their way to be helpful. They might, for instance, have a PDF kit for the author's marketing efforts and for reviewers. With information from the publisher, you could give due credit not only to the author and the publisher of the work but also the book designer.
It seems likely that a small publisher would put a link on their site to your review, to give the book prestige and increase sales.