(1972). The Future is tomorrow: 17 prospective studies. Hague: Nijhoff.
Trích dẫn kiểu ChicagoThe Future Is Tomorrow: 17 Prospective Studies. Hague: Nijhoff, 1972.
MLA CitationThe Future Is Tomorrow: 17 Prospective Studies. Hague: Nijhoff, 1972.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.