HALM,George. (1951). Economic Systems - George N.Halm. Rinehart&Company,Inc.
Chicago Style (17th ed.) CitationHALM,George. Economic Systems - George N.Halm. Rinehart&Company,Inc, 1951.
MLA引文HALM,George. Economic Systems - George N.Halm. Rinehart&Company,Inc, 1951.
警告：这些引文格式不一定是100％准确.