एपीए उद्धरण

(1972). The Future is tomorrow: 17 prospective studies. Hague: Nijhoff.

शिकागो स्टाइल उद्धरण

The Future Is Tomorrow: 17 Prospective Studies. Hague: Nijhoff, 1972.

एमएलए उद्धरण

The Future Is Tomorrow: 17 Prospective Studies. Hague: Nijhoff, 1972.