Kornat, Marek; Micgiel, J. (2007). "The Policy of Equilibrium and Polish Bilateralism". In Wandycz, P. (ed.). Reflections on Polish Foreign Policy(PDF). Columbia University Scool of International and Public Affairs. pp. 47–88. ISBN978-0-9654520-7-6. Archived from the original(PDF) on 2011-08-24. Retrieved 2010-06-22.
Kornat, Marek; Micgiel, J. (2007). "The Policy of Equilibrium and Polish Bilateralism". In Wandycz, P. (ed.). Reflections on Polish Foreign Policy(PDF). Columbia University Scool of International and Public Affairs. pp. 47–88. ISBN978-0-9654520-7-6. Archived from the original(PDF) on 2011-08-24. Retrieved 2010-06-22.