APA引文

Petersen, W. (1979). Malthus. Harvard University Press.

芝加哥风格引文

Petersen, William. Malthus. Cambridge, Mass.: Harvard University Press, 1979.

MLA引文

Petersen, William. Malthus. Harvard University Press, 1979.

警告：这些引文格式不一定是100％准确.