Book information should be in parenthesis. A semicolon should separate the publisher info and the year published.
Within story copy, keep same typeface as main text:
His book, Harry Potter (Penguin Books; 2004), is a classic teen novel.
In product stories, publisher info should match product text treatment, but remain in parenthesis after the book title. If a price is included with the information, it should appear after the year the book was published, separated by a semicolon:
Rachael Ray’s 30-Minute Cookbook (MEREDITH CORP.; 2009; $32.99) has easy recipes for cooks of all skill levels.