An extract from the review:
Black’s skill as a writer shines in this book: he successfully puts the pieces together in what many have considered an unsovable jig-saw puzzle. Black demonstrates that the solution need not be complicated by far-fetched hypothecating of fanciful theories about lost sources. He accomplishes this in a straightforward, clear manner which allows the reader to easily work through his book in one sitting. Black shows that one need not be voluminous to be persuasive. In a world when arguments are circular, complicated, lengthy, and just plain boring, Black keeps the reader’s attention from page 1 to page 100. …
(Source: Review Why Four Gospels?)