Cita APA (7a ed.)

Okey, R. (1991). Eastern Europe, 1740-1985: Feudalism to communism (2nd ed.). Routledge.

Cita Chicago Style (17a ed.)

Okey, Robin. Eastern Europe, 1740-1985: Feudalism to Communism. 2nd ed. London [etc.]: Routledge, 1991.

Cita MLA (9a ed.)

Okey, Robin. Eastern Europe, 1740-1985: Feudalism to Communism. 2nd ed. Routledge, 1991.