Bach, M. J. (1986). The design of the UNIX operating system. Prentice-Hall.
Dyfyniad Arddull ChicagoBach, Maurice J. The Design of the UNIX Operating System. Englewood Cliffs, N.J. New Delhi: Prentice-Hall, 1986.
Dyfyniad MLABach, Maurice J. The Design of the UNIX Operating System. Prentice-Hall, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.