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HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <allpages>
      <p pageid="28" ns="0" title="Baccarà" />
      <p pageid="126" ns="0" title="Betway" />
      <p pageid="40" ns="0" title="Blackjack" />
      <p pageid="51" ns="0" title="Bonus dei Casino Online" />
      <p pageid="52" ns="0" title="Bonus per giocatori VIP" />
      <p pageid="73" ns="0" title="Bonus sul Deposito" />
      <p pageid="164" ns="0" title="Casino.com" />
      <p pageid="121" ns="0" title="Casino Italiani" />
      <p pageid="12" ns="0" title="Casino Online" />
      <p pageid="203" ns="0" title="Casino Online Bitcoin" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Casino Online Onesti" />
  </query-continue>
</api>