$def with(cita_press_id)

$ url = 'https://citapress.org/' + cita_press_id

<hr>
<div class="cta-section">
  <p class="cta-section-title">$_('Download Options')</p>
    <ul class="ebook-download-options">
      <li><a href="$url" title="$_('Download PDF from Cita Press')">$_('PDF')</a></li>
      <li><a href="$url">$_('More at Cita Press')</a></li>
    </ul>
</div>