Follis, K. S. (2012). Building fortress Europe: The Polish-Ukrainian frontier. University of Pennsylvania Press.
Čikaški stil citiranja (17. izdanje)Follis, Karolina S. Building Fortress Europe: The Polish-Ukrainian Frontier. Philadelphia: University of Pennsylvania Press, 2012.
MLA način citiranja (9. izdanje)Follis, Karolina S. Building Fortress Europe: The Polish-Ukrainian Frontier. University of Pennsylvania Press, 2012.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.