diff --git a/biblio.admin.inc b/biblio.admin.inc
index 6fdd79f..4021353 100644
--- a/biblio.admin.inc
+++ b/biblio.admin.inc
@@ -431,6 +431,13 @@ function biblio_admin_settings() {
     '#options' => _biblio_admin_get_styles(),
     '#description' => t('This alters the layout of the "list" (short) view.')
   );
+  $form['style']['biblio_display_citation_key'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Show citation key in results'),
+    '#return_value' => 1,
+    '#default_value' => variable_get('biblio_display_citation_key', 0),
+    '#description' => t('For IEEE style only')
+    );
   $form['syndication'] = array(
     '#type' => 'fieldset',
     '#collapsible' => TRUE,
diff --git a/biblio_style_ieee.inc b/biblio_style_ieee.inc
index c52e6e9..51ab052 100644
--- a/biblio_style_ieee.inc
+++ b/biblio_style_ieee.inc
@@ -48,6 +48,8 @@ function biblio_style_ieee_author_options() {
  *   The styled biblio entry
  */
 function biblio_style_ieee($node, $base = 'biblio', $inline = false) {
+  if (!empty ($node->biblio_citekey)&&(variable_get('biblio_display_citation_key',0)))
+    $output .= '[' . check_plain($node->biblio_citekey) . '] ';
   $author_options = biblio_style_ieee_author_options();
   $authors = theme('biblio_format_authors', $node->biblio_contributors[1], $author_options, $inline);
   $output .= '<span class="biblio-authors">' . $authors . ", </span> \n";
@@ -102,4 +104,4 @@ function _ieee_format_author($author) {
   $format .= !empty ($author['firstname']) ? drupal_substr($author['firstname'], 0, 1) . '.' : '';
   $format .= !empty ($author['initials']) ? $author['initials'] . '.' : '';
   return $format;
-}
\ No newline at end of file
+}