Ng, Y. (1990). Social welfare and economic policy. Harvester Wheatsheaf.
芝加哥风格引文Ng, Yew-Kwang. Social Welfare and Economic Policy. New York: Harvester Wheatsheaf, 1990.
MLA引文Ng, Yew-Kwang. Social Welfare and Economic Policy. Harvester Wheatsheaf, 1990.
警告：这些引文格式不一定是100％准确.