Göttner, R., & Fischer, P. (1973). Was soll - was kann Prognostik? (1. Auflage, (1.-10. Tsd.).). Urania.
Citazione stile Chigago Style (17a edizione)Göttner, Reinhard, e Peter Fischer. Was Soll - Was Kann Prognostik? 1. Auflage, (1.-10. Tsd.). Leipzig ; Jena ; Berlin: Urania, 1973.
Citatione MLA (8a ed.)Göttner, Reinhard, e Peter Fischer. Was Soll - Was Kann Prognostik? 1. Auflage, (1.-10. Tsd.). Urania, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.