<h2>{% trans "Other resources" %}</h2>
<ul>
<li><a href="{{ extra_info.about }}">{% trans "Book on project's wiki" %}</a></li>
+ {% if extra_info.source_url %}
<li><a href="{{ extra_info.source_url }}">{% trans "Source of the book" %}</a></li>
+ {% endif %}
{% if book.gazeta_link %}
<li><a href="{{ book.gazeta_link }}">{% trans "Book description on Lektury.Gazeta.pl" %}</a></li>
{% endif %}