Sonnenfeldt, H. (1985). Soviet politics in the 1980s. Westview.
Cita Chicago Style (17a ed.)Sonnenfeldt, Helmut. Soviet Politics in the 1980s. Boulder [etc.]: Westview, 1985.
Cita MLA (9a ed.)Sonnenfeldt, Helmut. Soviet Politics in the 1980s. Westview, 1985.
Precaución: Estas citas no son 100% exactas.