APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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