Drill into computed field entity data
Procedurally:

if ($field_items = field_get_items('node', $node, 'field_charity_reference')) {
  $referenced_node = node_load($field_items[0]['target_id']);
  $title = $referenced_node-&gt;title;
}


Or OO'ly with the Entity API module:

$node_wrapper = entity_metadata_wrapper('node', $node);
$title = $node_wrapper-&gt;field_charity_reference-&gt;value()-&gt;title;


If you go the OO route this post will probably come in handy