Berlage, L. (1975). On the mathematics of economic aid. St. Ignatius Faculties.
芝加哥风格引文Berlage, L. On the Mathematics of Economic Aid. Antwerp, Belgium: St. Ignatius Faculties, 1975.
MLA引文Berlage, L. On the Mathematics of Economic Aid. St. Ignatius Faculties, 1975.
警告：这些引文格式不一定是100％准确.