Cita APA (7a ed.)

Black, C. E., & Grew, J. C. (1954). Challenge in Eastern Europe: 12 essays. Rutgers University Press.

Cita Chicago Style (17a ed.)

Black, Cyril E., y Joseph C. Grew. Challenge in Eastern Europe: 12 Essays. New Brunswick: Rutgers University Press, 1954.

Cita MLA (9a ed.)

Black, Cyril E., y Joseph C. Grew. Challenge in Eastern Europe: 12 Essays. Rutgers University Press, 1954.