v class="text-left">
                  <label class="control-label" for="book_format_from">{{_('Convert from:')}}</label>
                  <select class="form-control" name="book_format_from" id="book_format_from">
                    <option disabled selected value>-- {{_('select an option')}} --</option>
                    {% for format in source_formats %}
                    <option>{{format|upper}}</option>
                    {% endfor %}
                  </select>
                  <label class="c