Vibha,
My choice is #1: Professional XML 2nd Edition.
Based on Ranchers discussion I conlcude that reading this book and some other links is far enough to pass exam 141.
IMO, all these books are too big. A not so extensive, and also a good book is "XML in a Nutshell".
Adrian
PS: Please, take a time to read this:
Official policy on registered names [ January 18, 2002: Message edited by: Adrian Ferreira ]