Citazione APA

Samuelson,Paul A, Nordhaus,William D, Sudip Chaudhuri, & Anindya Sen. (2020). Economics (20th ed.). McGraw Hill.

Stile di citazione Chicago

Samuelson,Paul A, Nordhaus,William D, Sudip Chaudhuri, e Anindya Sen. Economics. 20th ed. Chennai: McGraw Hill, 2020.

Citazione MLA

Samuelson,Paul A, et al. Economics. 20th ed. McGraw Hill, 2020.