<http://schema.org/url>
<http://books.simonandschuster.com:80/Star-Trek-II-The-Wrath-of-Khan/Vonda-N-McIntyre/Star-Trek-The-Original-Series/9780743419581>
<http://books.simonandschuster.com/Star-Trek-II-The-Wrath-of-Khan/Vonda-N-McIntyre/Star-Trek-The-Original-Series/9780743419581>