Sachs , I. (1964). Agriculture Land Reforms and Economic Development b. PWN.
芝加哥风格引文Sachs , Ignacy. Agriculture Land Reforms and Economic Development B. Warsaw: PWN, 1964.
MLA引文Sachs , Ignacy. Agriculture Land Reforms and Economic Development B. PWN, 1964.
警告：这些引文格式不一定是100％准确.