Create a node programmatically in drupal 7 with Reference fields

How to create the node programmatically in drupal 7 with Reference field modules either References or Entity Reference(that is in drupal 8 core now).

Also find the below example of creating a simple node with page type with Title,Description and a Reference(References or Entity Reference) fields.

$node = new stdClass();
$node->uid = 1;
$node->title = 'Title of the Field';
$node->status = 1;
$node->comment = 1; //Hidden the Comment on the node
$node->promote = 1;
$node->sticky = 0;
$node->type = 'article';
$node->created = '';
$node->changed = '';
$node->timestamp = '';
$node->body['und'][0]['value'] = 'Full Story';
$node->body['und'][0]['summary'] = 'Summary';
$node->body['und'][0]['format'] = 'full_html';
$node->revision = 0;
$node->field_entity_reference['und'][0]['target_id'] = 50;
//Here field_entity_reference is the name of the Entity Reference Field and 50 is the nid of the reference node.
$nid = node_save($node);

Here field_entity_reference is the name of the Entity Reference Field and 50 is the nid of the reference node.

you will get the $nid after saving the node