For a link like this:
books by J Countryman
Copy this URL:
https://www.bookfinder.com/search/?author=J+Countryman&lang=en&st=xl&ac=qr
Copy this HTML:
<a href="https://www.bookfinder.com/search/?author=J+Countryman&lang=en&st=xl&ac=qr">books by J Countryman</a>