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O'Reilly & Associates, Xlib Programming Manual, ASIN: 0937175110
O'Reilly & Associates, Xlib Reference Manual, ASIN: 0937175129
O'Reilly & Associates, X Toolkit Intrinsics Programming Manual, ASIN: 0937175560
O'Reilly & Associates, X Toolkit Intrinsics Reference Manual, ASIN: 0937175579
O'Reilly & Associates, Motif Programming Manual, ASIN: 0937175706
O'Reilly & Associates, Motif Reference Manual, ASIN: 1565920384