Blazyca, G. (1986). Poland to the 1990s: Retreat or reform? The Economist Publictions Limited The Economist Intelligence Unit.
Citazione stile Chigago Style (17a edizione)Blazyca, George. Poland to the 1990s: Retreat or Reform? London: The Economist Publictions Limited The Economist Intelligence Unit, 1986.
Citatione MLA (9a ed.)Blazyca, George. Poland to the 1990s: Retreat or Reform? The Economist Publictions Limited The Economist Intelligence Unit, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.