Definitive XML Schema, Priscilla Walmsley , Prentice Hall, 0-13-065567-8

Learning XSLT, Michael Fitzgerald , O'Reilly & Associates, 0596003277

Suggested: Learning XML (2nd Edition), Eric Ray , O'Reilly & Associates, 0-596-00420-6

SIMS will have both "Learning XML" and "Learning XSLT" available online.

These books are not online with the library as they didn't purchase the licenses.