(1991). Poland in the perspective of global change. Polish Association for the Club of Rome.
Citazione stile Chigago Style (17a edizione)Poland in the Perspective of Global Change. Warsaw: Polish Association for the Club of Rome, 1991.
Citatione MLA (9a ed.)Poland in the Perspective of Global Change. Polish Association for the Club of Rome, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.