Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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