Hire Literary review magazines to review your story. Authors hire them all the time and then pick and choose the nicer remarks to add to the back blurb of the book. Every company has different stipulations in order for them to review your book. If you're looking for national exposure then try places like USA Today and Chicago Tribune and the like.
You also need to find virtual (online), communities like "Goodreads" or book review blogs or book journals and other print platforms to receive testimonials from readers. The more reviews you receive, the more likely it will draw in publicity from more accredited media platforms. You could also look into audio book readings and offer for a limited time, a free reading of your book via audible and other sites for basic promotion.
Again, you'll have to look into the specific requirements for each website/company.
P.S. Don't listen to that other commentator. Paying for reviews isn't in any way immoral or unprofessional. It is standard procedure. Where do you think 90% of the book reviews on the back of NYTimes bestsellers came from? The kindness of that reviewer's heart? Heck no. They were paid. Paying for reviews doesn't guarantee praise anyway, you're paying a reading fee. Legitimate book reviewers even have authors sign waivers acknowledging this.
@luck: Frowned upon by the industry? What industry are you referring to because the U.S. publishing industry certainly isn't it...sorry to contradict your Twitter friends. Here's some facts you might want to consider:
1) Traditionally published authors pay reviewers for a thorough reading and analysis of their story (which includes the good/bad aspects of the story). The publisher/author then paraphrases/quotes from that review and strings all the praise together with ellipses, (which then makes it on the back cover blurb).Those reviews were paid for. And it was legitimate. If you were truly a part of the professional publishing industry, you'd know this.
2) Book reviewers are not impartial to self published authors. This has actually been a major concern in the industry, the discrimination against self-published authors (though this is gradually improving).
3) Traditional and self-published authors also review each other's books without any compensation whatsoever. This is also considered a legitimate form of review despite the conflict of interest. It's why authors join writing communities in the first place, to take advantage of this service from each other. The Romance Writers of America or the Science fiction and fantasy writers of america.. or countless other accredited networks like this are examples.
So, feel free to thumbs me down all you wish. Facts are facts.