एपीए उद्धरण

Bull, G. M. (1980). Darmouth time-sharing system. Ellis Horwood.

शिकागो स्टाइल उद्धरण

Bull, Gordon M. Darmouth Time-sharing System. London: Ellis Horwood, 1980.

एमएलए उद्धरण

Bull, Gordon M. Darmouth Time-sharing System. Ellis Horwood, 1980.