एपीए उद्धरण

Norton, B. G. A. (1991). Toward unity among environmentalists.

शिकागो स्टाइल उद्धरण

Norton, Bryan G; Author. Toward Unity Among Environmentalists. New York, OUP, 1991.

एमएलए उद्धरण

Norton, Bryan G; Author. Toward Unity Among Environmentalists. 1991.