एपीए उद्धरण

A N Walker. (1984). The UNIX enviornment. John Wiley and Sons.

शिकागो स्टाइल उद्धरण

A N Walker. The UNIX Enviornment. John Wiley and Sons, 1984.

एमएलए उद्धरण

A N Walker. The UNIX Enviornment. John Wiley and Sons, 1984.