Cita APA (7th ed.)
Okey, R. (1991). Eastern Europe 1740-1985: Feudalism to communism (2nd ed.). Routledge.
Cita Chicago (17th ed.)
Okey, Robin. Eastern Europe 1740-1985: Feudalism to Communism. 2nd ed. London: Routledge, 1991.
Cita MLA (9th ed.)
Okey, Robin. Eastern Europe 1740-1985: Feudalism to Communism. 2nd ed. Routledge, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.