APA (7th ed.) Citation

(1990). The X Window system in a nutshell: For version 11 release 4 of the X Window system ; desktop quick reference (1. ed., small print.). O'Reilly.

Chicago Style (17th ed.) Citation

The X Window System in a Nutshell: For Version 11 Release 4 of the X Window System ; Desktop Quick Reference. 1. ed., small print. Sebastopol, Calif: O'Reilly, 1990.

MLA (9th ed.) Citation

The X Window System in a Nutshell: For Version 11 Release 4 of the X Window System ; Desktop Quick Reference. 1. ed., small print. O'Reilly, 1990.