1. Print Books
- Aron Hsiao, The Concise Guide to XFree86 for Linux, Que, 2000.
- Linda Mui and Valerie Querica, X User Tools, O'Reilly, 1994.
- Valerie Querica and Tim O'Reilly, X Window System, volume 3:
X Window System User's Guide, O'Reilly, 1993.
2. URLS