Grzybowski, K. (1973). East-West trade.
Lua i Stíl Chicago (17ú heag.)Grzybowski, Kazimierz. East-West Trade. Dobbs Ferry, N.Y., Oceana Publications [1974, 1973.
Lua MLA (9ú heag.)Grzybowski, Kazimierz. East-West Trade. 1973.
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