Dear Frying Dutchman,
Might want to try the Airman Shop at Clemenceau Road(the building with MAS Ticketing), next to Park Mall Shopping centre. But I reckon the best reference books are from PPSC (Professional Pilot's Study Centre) in U.K. They are very comprehensive, informative and comes with revision papers. Or you might want to look at Malaysian Flying Academy at Malacca. Hope this is helpful.