Cita APA (7a ed.)

Young, D. A. (1989). X window systems: Programming and applications with Xt. Prentice-Hall.

Cita Chicago Style (17a ed.)

Young, Douglas A. X Window Systems: Programming and Applications with Xt. Englewood Cliffs, N.J: Prentice-Hall, 1989.

Cita MLA (9a ed.)

Young, Douglas A. X Window Systems: Programming and Applications with Xt. Prentice-Hall, 1989.