Citazione Stile APA (7a Edizione)

Samuelson, P. A., & Nordhaus, W. D. (1998). Economics (16th ed.). Irwin/McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Samuelson, Paul Anthony, e William D. Nordhaus. Economics. 16th ed. Boston, Mass: Irwin/McGraw-Hill, 1998.

Citatione MLA (8a ed.)

Samuelson, Paul Anthony, e William D. Nordhaus. Economics. 16th ed. Irwin/McGraw-Hill, 1998.