Cita APA (7th ed.)

Göttner, R. (1973). Was soll - was kann Prognostik? Urania.

Cita Chicago (17th ed.)

Göttner, Reinhard. Was Soll - Was Kann Prognostik? Leipzig: Urania, 1973.

Cita MLA (8th ed.)

Göttner, Reinhard. Was Soll - Was Kann Prognostik? Urania, 1973.