Display WooCommerce product attribute archive links on product page, right below the add to cart button.

wc-attribute-links.php

<?php

/*
Plugin Name: WooCommerce Attribute Links
Description: Display product attribute archive links on product page, right below the add to cart button.
Version: 1.0
Author: Coen Jacobs
Author URI: http://coenjacobs.me
*/

add_action( 'woocommerce_after_add_to_cart_button', 'cj_show_attribute_links' );

function cj_show_attribute_links() {
	global $post;
	$attribute_name = '<ATTRIBUTE_NAME>'; // Insert attribute name here

	$terms = wp_get_post_terms( $post->ID, $attribute_name );
	$terms_array = array();

        if ( ! empty( $terms ) ) {
	        foreach ( $terms as $term ) {
		       $archive_link = get_term_link( $term->slug, $attribute_name );
		       $full_line = '<a href="' . $archive_link . '">'. $term->name . '</a>';
		       array_push( $terms_array, $full_line );
	        }

	        echo implode( $terms_array, ', ' );
        }
}

?>