You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20140416143036" timestamp="2014-04-16T14:30:36Z" ns="0" title="Club Atlético San Martín" />
        <page value="20140416143036" timestamp="2014-04-16T14:30:36Z" ns="0" title="Club Atlético Independiente" />
        <page value="20140416143036" timestamp="2014-04-16T14:30:36Z" ns="0" title="Club de Pesca La Glorieta" />
        <page value="20140416143036" timestamp="2014-04-16T14:30:36Z" ns="0" title="Club Atlético Bull Dog" />
        <page value="20140416143037" timestamp="2014-04-16T14:30:37Z" ns="0" title="Club Atlético La Armonia" />
        <page value="20140416143037" timestamp="2014-04-16T14:30:37Z" ns="0" title="Club Deportivo Argentino" />
        <page value="20140416143037" timestamp="2014-04-16T14:30:37Z" ns="0" title="Club Atlético Juventud Unida" />
        <page value="20140429000649" timestamp="2014-04-29T00:06:49Z" ns="0" title="Marcelo Bacas" />
        <page value="20140429000649" timestamp="2014-04-29T00:06:49Z" ns="0" title="Jardín de Infantes Merceditas de San Martín" />
        <page value="20140429000649" timestamp="2014-04-29T00:06:49Z" ns="0" title="Grupo Aventura" />
      </results>
    </querypage>
  </query>
</api>