• Download https://github.com/gbv/citeproc-php and place it under libraries/citeproc-php
• Enable libraries module
• Execute code:

  $biblio = biblio_create('journal');
  dpm($biblio->getText('citeproc', array('style_name' => 'ama')));
  dpm($biblio->getText('citeproc'));