Conley, R. W. (1973). The economics of mental retardation. Johns Hopkins University Press.
芝加哥风格引文Conley, Ronald W. The Economics of Mental Retardation. Baltimore: Johns Hopkins University Press, 1973.
MLA引文Conley, Ronald W. The Economics of Mental Retardation. Johns Hopkins University Press, 1973.
警告：这些引文格式不一定是100％准确.