APA (7th ed.) Citation

Quercia, V., & O'Reilly, T. (1993). X Window system user's guide OSF motif 1.2 edition. O'Reilly.

Chicago Style (17th ed.) Citation

Quercia, Valerie, and Tim O'Reilly. X Window System User's Guide OSF Motif 1.2 Edition. Sebastopol: O'Reilly, 1993.

MLA (9th ed.) Citation

Quercia, Valerie, and Tim O'Reilly. X Window System User's Guide OSF Motif 1.2 Edition. O'Reilly, 1993.