APA (7th ed.) Citation

Gilly, D., & O'Reilly, T. (1990). The X Window System in a Nutshell: For Version 11 Release 4 of the X Window System. O' Reilly and Associates, Inc.

Chicago Style (17th ed.) Citation

Gilly, Daniel, and Tim O'Reilly. The X Window System in a Nutshell: For Version 11 Release 4 of the X Window System. Sebastopol CA: O' Reilly and Associates, Inc, 1990.

MLA (8th ed.) Citation

Gilly, Daniel, and Tim O'Reilly. The X Window System in a Nutshell: For Version 11 Release 4 of the X Window System. O' Reilly and Associates, Inc, 1990.