Michna, W. (1992). Poland's food security and agricultural policy at the turn of the 20th and 21st centuries. Friedrich Ebert Foundation Poland.
Chicago-Zitierstil (17. Ausg.)Michna, Waldemar. Poland's Food Security and Agricultural Policy at the Turn of the 20th and 21st Centuries. Warsaw: Friedrich Ebert Foundation Poland, 1992.
MLA-Zitierstil (9. Ausg.)Michna, Waldemar. Poland's Food Security and Agricultural Policy at the Turn of the 20th and 21st Centuries. Friedrich Ebert Foundation Poland, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.