Template code; custom field suite

Hi. I am using custom field suit where I have set up a relationship field.

All I want to do is create a list of posts with links back to the original post.

<?php
$values = CFS()->get( 'products' );
foreach ( $values as $post_id ) {
    $the_post = get_post( $post_id );
    echo '<p> ' . $the_post->post_title . ' </p>';
}
?>

Above code successfully gets me the post title selected. How do I change this into a clickable link.