Hi @thecorkboard
Adding to the above, you can then load the selected post’s metadata like so:
<?php
$posts = get_field('select_articles');
if( $posts ):
foreach( $posts as $post): // variable must be called $post (IMPORTANT)
setup_postdata($post);
$value = get_field('library_citation');
endforeach;
wp_reset_postdata(); // IMPORTANT - reset the $post object so the rest of the page works correctly
endif;
?>