Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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