APA aipamena

Grzybowski, K. (1973). East-West trade.

Chicago Style aipamena

Grzybowski, Kazimierz. East-West Trade. Dobbs Ferry, N.Y., Oceana Publications [1974, 1973.

MLA aipamena

Grzybowski, Kazimierz. East-West Trade. 1973.