Cita APA (7th ed.)

Samuelson, P. A., & Nordhaus, W. D. (2018). Economics (19th.). McGraw Hill Education India) Private Limited.

Cita Chicago (17th ed.)

Samuelson, Paul A., i William D. Nordhaus. Economics. 19th. New Delhi: McGraw Hill Education India) Private Limited, 2018.

Cita MLA (9th ed.)

Samuelson, Paul A., i William D. Nordhaus. Economics. 19th. McGraw Hill Education India) Private Limited, 2018.