Check under <list name="author" id="1">:
Should be something like:
Should be something like:
<single_prefix></single_prefix>
<multi_prefix></multi_prefix>
<corporate>{%Corporate%}</corporate>
<first_person>{%Last% }{%First:a%}{%Middle:a%}</first_person>
<other_persons>{%Last% }{%First:a%}{%Middle:a%}</other_persons>.