APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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