APA (7th ed.) Citation

Young, D. A. (1994). The X window system: Programming and applications with Xt (2nd ed.). PTR Prentice Hall.

Chicago Style (17th ed.) Citation

Young, Douglas A. The X Window System: Programming and Applications with Xt. 2nd ed. Englewood Cliffs, N.J.: PTR Prentice Hall, 1994.

MLA (8th ed.) Citation

Young, Douglas A. The X Window System: Programming and Applications with Xt. 2nd ed. PTR Prentice Hall, 1994.