| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| X Window System: C Library and Protocol Reference | 978-0-13-972159-5 | 1990 | Robert W. Scheifler · Ron Newman · Al Mento · Al Wojtas |
| X Window System Complete Reference to Xlib and Protocol | 978-0-13-972050-5 | 1990 | Robert Scheifler · Robert W. Schiefler |
| X Window System: Core and Extension Protocols | 978-1-55558-148-0 | 1997 | Donna Converse · Al Mento · Robert Scheifler |
| X Window Sytem, Third Edition: The Complete Reference to Xlib, X Protocol, ICCM, XLFD, X Version 11, Release 5 | 978-1-55558-088-9 | 1992 | David Rosenthal · Jim Flowers · Robert Scheifler |