एपीए उद्धरण

Encyclopedia Britanica. (1976). 1976 Yearbook of Science and the Future. Encycyclopaedia Britannica.

शिकागो स्टाइल उद्धरण

Encyclopedia Britanica. 1976 Yearbook of Science and the Future. London: Encycyclopaedia Britannica, 1976.

एमएलए उद्धरण

Encyclopedia Britanica. 1976 Yearbook of Science and the Future. Encycyclopaedia Britannica, 1976.