Göttner, R. (1973). Was ist - was soll Operationsforschung. Urania Verlag.
Citazione stile Chigago Style (17a edizione)Göttner, Reinhard. Was Ist - Was Soll Operationsforschung. Leipzig: Urania Verlag, 1973.
Citatione MLA (8a ed.)Göttner, Reinhard. Was Ist - Was Soll Operationsforschung. Urania Verlag, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.