APA-viite (7. p.)

Scheifler, R. W., & Gettys, J. (1990). X Window System: The complete reference to Xlib, X Protocol, ICCCM, XLFD (2nd ed.). Digital Press.

Chicago-viite (17. p.)

Scheifler, Robert W., ja James Gettys. X Window System: The Complete Reference to Xlib, X Protocol, ICCCM, XLFD. 2nd ed. Burlington, MA: Digital Press, 1990.

MLA-viite (8. p.)

Scheifler, Robert W., ja James Gettys. X Window System: The Complete Reference to Xlib, X Protocol, ICCCM, XLFD. 2nd ed. Digital Press, 1990.