"Chandra's Dance Extravaganza carries both the Cabaret Pattern Book and the Folkloric Pattern Book by Rebecca Long." (See Book Sources page.) --Chandra
You can also go directly to their Book Section. There's a Middle Eastern subsection with many books on the music, instruments, how to play etc., including Mary Ellen Donald's Doumbec Delight. Other items include "Best Oud Method", "Saz Method", "Ney Method", all written in Turkish (customers are advised they're worth buying a Turkish dictionary); and other books on music of various middle eastern countries. Many titles are described as including "music" which would appear to mean sheet music. Additionally, there's the Book and Recording Sets section containing a few special book and recording sets with a bit of Middle Eastern drumming on some.