Display a video next to a quiz
I worked out a way to do it.

Create a block with some custom PHP.

&lt;?php

//Find current nid
if (arg(0) == 'node' &amp;&amp; is_numeric(arg(1))) $nodeid = arg(1);

//Load that node
$node = node_load($nodeid);

//Get referenced entity if it exists
if (isset($node-&gt;field_videolink['und'][0]['target_id'])) {
    $refnid = $node-&gt;field_videolink['und'][0]['target_id'];

    //Now load that node
    $node2 = node_load($refnid);

    //Display the body 
    print($node2-&gt;body['und'][0]['value']);
};

?&gt;


The entity reference field is called 'videolink'. You should enable the block only for the quiz content type otherwise you'll get an error on the home page.

Apologies if the PHP is a little shoddy. I'm not an expert by any means.