APA引文

Samuelson, P. A., & Nordhaus, W. D. C. (2021). Economics (20th.). McGraw Hill Education.

芝加哥风格引文

Samuelson, Paul A., 与 William D; Chaudhuri Nordhaus. Economics. 20th. New Delhi: McGraw Hill Education, 2021.

MLA引文

Samuelson, Paul A., 与 William D; Chaudhuri Nordhaus. Economics. 20th. McGraw Hill Education, 2021.

警告：这些引文格式不一定是100％准确.