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>
    <allpages apcontinue="Proxy" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="22" ns="0" title="Cara Memberikan Penilaian Akhir" />
      <p pageid="17" ns="0" title="Daftar Printer Umum" />
      <p pageid="16" ns="0" title="Email" />
      <p pageid="19" ns="0" title="Lain lain" />
      <p pageid="10" ns="0" title="Main Page" />
      <p pageid="1" ns="0" title="Main page" />
      <p pageid="15" ns="0" title="Panduan Pembimbing Akademis" />
      <p pageid="20" ns="0" title="Pertanyaan tentang SIAK dan Aturan Akademik" />
      <p pageid="14" ns="0" title="Prosedur Buku,Tutup,dan Perubahan Kapasitas Kelas" />
      <p pageid="13" ns="0" title="Prosedur Rekrutmen Asisten" />
    </allpages>
  </query>
</api>