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="20140911190321" timestamp="2014-09-11T19:03:21Z" ns="0" title="Mi-pagina" />
        <page value="20141222173848" timestamp="2014-12-22T17:38:48Z" ns="0" title="MARIA" />
        <page value="20141222175411" timestamp="2014-12-22T17:54:11Z" ns="0" title="WIKI" />
        <page value="20141224140212" timestamp="2014-12-24T14:02:12Z" ns="0" title="Copiar Líneas" />
        <page value="20141224153758" timestamp="2014-12-24T15:37:58Z" ns="0" title="Configuración del Vehículo (Quinto)" />
        <page value="20141224162330" timestamp="2014-12-24T16:23:30Z" ns="0" title="Ordenes de Ventas" />
        <page value="20141224162419" timestamp="2014-12-24T16:24:19Z" ns="0" title="Ordenes de Ventas por Despacho Directo" />
        <page value="20150105184737" timestamp="2015-01-05T18:47:37Z" ns="0" title="Pago" />
        <page value="20150106202834" timestamp="2015-01-06T20:28:34Z" ns="0" title="Cambiar Socio del Negocio" />
        <page value="20150107165948" timestamp="2015-01-07T16:59:48Z" ns="0" title="Agente Comercial" />
      </results>
    </querypage>
  </query>
</api>