1. X toolkit intrinsics reference manual : for version 11 of the X Window System Publication/Creation: [Sebastopol, CA] : O'Reilly & Associates, [1990] Resource Type: Book Access & Availability: Loading
2. X Window System user's guide : for X11 R3 and R4 of the X Window System Author/Creator: Quercia, Valerie, author Publication/Creation: Sebastopol, CA : O'Reilly & Associates, [1990] Resource Type: Book Edition: Third edition, revised to reflect release 4. Access & Availability: Loading
3. Xlib reference manual : for version 11 of the X Window System Publication/Creation: [Sebastapol, CA] : O'Reilly & Associates, [1990] Resource Type: Book Edition: 2nd ed. covers release 3 and release 4, major revisions. Access & Availability: Loading