.Petersen, J. L. (1994). The Road to 2015: Profiles of the future. Waite Group Press; [Publishers Group West [distributor.
Chicago-referens (17:e uppl.).Petersen, John L. The Road to 2015: Profiles of the Future. Corte Madera, Calif. : Emeryville, CA: Waite Group Press; [Publishers Group West [distributor, 1994.
MLA-referens (9:e uppl.).Petersen, John L. The Road to 2015: Profiles of the Future. Waite Group Press; [Publishers Group West [distributor, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.