एपीए उद्धरण

Harris ,Michael H. (1980). Reference service. Clive Bingley.

शिकागो स्टाइल उद्धरण

Harris ,Michael H. Reference Service. London: Clive Bingley, 1980.

एमएलए उद्धरण

Harris ,Michael H. Reference Service. Clive Bingley, 1980.