Não informado. (1996). Post-soviet Geography and Economics. V.H. Winston & Sons.
Lua i Stíl Chicago (17ú heag.)Não informado. Post-soviet Geography and Economics. Palm Beach, Fla: V.H. Winston & Sons, 1996.
Lua MLA (8ú heag.)Não informado. Post-soviet Geography and Economics. V.H. Winston & Sons, 1996.
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