OK, let's try those links again...
The two search results links didn't work for me, so I figure they won't work for you either. Oh, and David Stuart, not "M. Stuart", is the author of that one workbook. (Must have been thinking of Mary, Queen of Scots. ;) duhhh)
So: Learn-A-Test
Go to http://learnatest.com and type "GMAT" into the search box. You'll go where I was trying to send you.
amazon.com
Go to amazon, select "Books" in the "Search" pull-down menu and click "Go". You'll go to a guided search for books only. Type "GMAT" into the Subject box and click "Search Now". That should get you the 96 hits.
Sorry.
Regards--
Mary Anne