APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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