एपीए उद्धरण

Samuel J Leffler. (1989). The design and implementation of 4.3 BSD UNIX Operating system. Addison-Wesley Publishing.

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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