Book store in Kuala Lumpur

I visited several book store in Kuala Lumpur. I like stationery stuff but so far I couldn't find the competent stationery shop :(.

I am having a hard time driving in KL. It is very complicated. Maybe I need this map :)

Gps Street Directory is very thick and detailed map for driver in KL.

Other maps in the right looks like for the tourist.

I tried to take a picture of Gps book, but didn't go well.

This book store is in KL Sentral and I forgot the name.