.Petersen, J. L. (1994). The Road to 2015: Profiles of the future. Waite Group Press; [Publishers Group West [distributor.
Citazione stile Chigago Style (17a edizione).Petersen, John L. The Road to 2015: Profiles of the Future. Corte Madera, Calif. : Emeryville, CA: Waite Group Press; [Publishers Group West [distributor, 1994.
Citatione MLA (9a ed.).Petersen, John L. The Road to 2015: Profiles of the Future. Waite Group Press; [Publishers Group West [distributor, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.