Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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