title: AMP Page. Best Practice to link to another pages of the site
body: <p>In my site have AMP version of all pages.</p>
  
  <p>When in an AMP Page there are links (href) to another pages of the site (<strong>like related articles</strong>). Those links must point to the AMP version or to the regular version?</p>
  
  <p>On the Internet I found many AMP implementations that link AMP pages with non-AMP version <strong>despite AMP versios exists</strong> but I don't figure out why. </p>
  
  <p>I think that if a mobile user visit an AMP page then in that page the links to
  related pages of the site must point to the amp version too, for improve UX but I don't sure about what is te best practice to follow.</p>
  
  <p>Thanks in advance.</p>
  
  <p>Note: this question is not about local amp site vs amp CDN but it's about linking pages inside the local site. Please read it carefully and sorry if my english is not good enough.</p>