==Janet Marlow's Approach Guide: Self-published, not published by Mel Bay==

Marlow's list of publications with Mel Bay (including no "Approach Guide"):
http://www.melbay.com/authors.asp?author=1675

Amazon.com lists the publisher as "Janet Marlow Music LLC (April 2005)", not Mel Bay:
http://www.amazon.com/Playing-Ten-String-Guitar-Approach-Guitarists/dp/1599752611/

I happen to have a copy of Marlow's Approach Guide in its DVD format: clearly self-published.