{% if book.mobi_file %}
<span><a href="{{ book.mobi_file.url}}">MOBI</a> {% trans "for Kindle" %}</span>
{% endif %}
+ {% if book.fb2_file %}
+ <span><a href="{{ book.fb2_file.url}}">FB2</a> {% trans "FictionBook" %}</span>
+ {% endif %}
{% if book.txt_file %}
<span><a href="{{ book.txt_file.url}}">TXT</a> {% trans "for advanced usage" %}</span>
{% endif %}