APA-Zitierstil (7. Ausg.)

Quercia, V., & O'Reilly, T. (1990). X Window System user's guide: For X11 R3 and R4 of the X Window System (3. ed., rev. and updated.). O'Reilly.

Chicago-Zitierstil (17. Ausg.)

Quercia, Valerie, und Tim O'Reilly. X Window System User's Guide: For X11 R3 and R4 of the X Window System. 3. ed., rev. and updated. Sebastopol, CA: O'Reilly, 1990.

MLA-Zitierstil (9. Ausg.)

Quercia, Valerie, und Tim O'Reilly. X Window System User's Guide: For X11 R3 and R4 of the X Window System. 3. ed., rev. and updated. O'Reilly, 1990.