Riddell, W. R. (1937). Recent Russian Trotskyite Centre Criminal Trial.
Cita Chicago Style (17a ed.)Riddell, William Renwick. Recent Russian Trotskyite Centre Criminal Trial. 1937.
Cita MLA (9a ed.)Riddell, William Renwick. Recent Russian Trotskyite Centre Criminal Trial. 1937.
Precaución: Estas citas no son 100% exactas.
