Linstone, H. A., Simmonds, W. H. C., & Bäckstrand, G. (1977). Futures research: New directions. Addison-Wesley Pub. Co., Advanced Book Program.
Citazione stile Chigago Style (17a edizione)Linstone, Harold A., Walter Henry Clive Simmonds, e Göran Bäckstrand. Futures Research: New Directions. Reading, Mass.: Addison-Wesley Pub. Co., Advanced Book Program, 1977.
Citatione MLA (9a ed.)Linstone, Harold A., et al. Futures Research: New Directions. Addison-Wesley Pub. Co., Advanced Book Program, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.