devel.module

  biblio_create_field('biblio_year', 'biblio', 'book');
  biblio_create_field('biblio_abstract', 'biblio', 'book');
  biblio_create_field('biblio_image', 'biblio', 'book');
  biblio_create_field('biblio_pages', 'biblio', 'book');

  biblio_create_field('contributor_collection', 'biblio', 'book');
  biblio_create_field('biblio_contributor', 'field_collection_item', 'contributor_field_collection');
  biblio_create_field('biblio_contributor_roles', 'field_collection_item', 'contributor_field_collection');

  $biblio = biblio_create('book');
  $wrapper = entity_metadata_wrapper('biblio', $biblio);
  $wrapper->biblio_year->set(120);
  $wrapper->biblio_abstract->set('This is the abstract!');
  $wrapper->biblio_pages->set('22-25');

  // Add contributor to collection.
  $biblio_contributor1 = biblio_contributor_create('Amitai', 'author');
  $biblio_contributor1->save();

  $biblio_contributor2 = biblio_contributor_create('Ferdi', 'editor');
  $biblio_contributor2->save();

  $wrapper->contributor_collection[] = $biblio_contributor1;
  $wrapper->contributor_collection[] = $biblio_contributor2;

  $biblio->title= 'TEST CITEPROC';
  $wrapper->save();

  dpm($biblio->getText('citeproc'));