The fastest way to do it would be to file a DMCA takedown request. I looked up the info for that site:
http://www.whois.net/whois/planetfreebook.com
Takedown Basics:
Send the email to
whois@bluehost.com, and state that you are the author and that you own the copyrights. Be sure to include a list of links to all the web pages with your work.