APA (7th ed.) Citation

O'Reilly, T. (1990). X toolkit intrinsics reference manual: For version 11 of the X Window System. O'Reilly & Associates.

Chicago Style (17th ed.) Citation

O'Reilly, Tim. X Toolkit Intrinsics Reference Manual: For Version 11 of the X Window System. [Sebastopol, CA]: O'Reilly & Associates, 1990.

MLA (9th ed.) Citation

O'Reilly, Tim. X Toolkit Intrinsics Reference Manual: For Version 11 of the X Window System. O'Reilly & Associates, 1990.