APA (7th ed.) Citation

Leffler, S. J. (1989). The Design and implementation of the 4.3BSD UNIX operating system. Addison-Wesley.

Chicago Style (17th ed.) Citation

Leffler, Samuel J. The Design and Implementation of the 4.3BSD UNIX Operating System. Reading, Mass.: Addison-Wesley, 1989.

MLA (9th ed.) Citation

Leffler, Samuel J. The Design and Implementation of the 4.3BSD UNIX Operating System. Addison-Wesley, 1989.

Warning: These citations may not always be 100% accurate.