Cita APA (7th ed.)

Black, C. E. (1954). Challenge in Eastern Europe. Rutgers University Press.

Cita Chicago (17th ed.)

Black, C. E. Challenge in Eastern Europe. New Brunswick, Canadá: Rutgers University Press, 1954.

Cita MLA (9th ed.)

Black, C. E. Challenge in Eastern Europe. Rutgers University Press, 1954.