APA引文

Barr, N. (2012). Economics of the Welfare State (5th.). Oxford.

芝加哥风格引文

Barr, Nicholas. Economics of the Welfare State. 5th. UK: Oxford, 2012.

MLA引文

Barr, Nicholas. Economics of the Welfare State. 5th. Oxford, 2012.

警告：这些引文格式不一定是100％准确.