Sachs , I. (1964). Agriculture Land Reforms and Economic Development b. PWN.
Chicago-čujuhus (17. p.)Sachs , Ignacy. Agriculture Land Reforms and Economic Development B. Warsaw: PWN, 1964.
MLA-čujuhus (9. p.)Sachs , Ignacy. Agriculture Land Reforms and Economic Development B. PWN, 1964.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.