APA (7th ed.) Citation

Bach, M. J. (1986). The design of the UNIX operating system. Prentice-Hall.

Chicago Style (17th ed.) Citation

Bach, Maurice J. The Design of the UNIX Operating System. New Jersey: Prentice-Hall, 1986.

MLA (9th ed.) Citation

Bach, Maurice J. The Design of the UNIX Operating System. Prentice-Hall, 1986.