Woocommerce: show all products inside an attribute, no filter

Hi
I’m struggling with what should be a simple issue to solve in Woocommerce.

I have a page where I want to show all my products with the same attribute (ex: publishers) alphabetically. How do I do this? I’m going nuts with this…

I’m using the attribute shortcode — [product_attribute attribute=’xxx’ filter=’yyy’]. But the shortcode is only working if I specify a filter for a term inside the attribute (ex: Penguin Books)!! I don’t wan’t to call the terms, I want to list all products inside the attribute publishers alphabetically!

How can I do this?! Please help!
Can I get rid of the filter somehow, or specify no filter, just show all products?