book.xsl

<?xml version='1.0'?>
<xsl:stylesheet  
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

  <xsl:param name="html.stylesheet" select="'css/bootstrap.min.css'"/>

  <xsl:template name="user.head.content">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
    <script src="assets/js/ie10-viewport-bug-workaround.js"></script>
  </xsl:template>

</xsl:stylesheet>