Cita APA (7th ed.)

Samuelson, P. A., & Nordhaus, W. D. (2017). Economics (19th ed.). McGraw Hill Education.

Cita Chicago (17th ed.)

Samuelson, Paul A., i William D. Nordhaus. Economics. 19th ed. Chennai: McGraw Hill Education, 2017.

Cita MLA (9th ed.)

Samuelson, Paul A., i William D. Nordhaus. Economics. 19th ed. McGraw Hill Education, 2017.