APA (7e ed.) Bronvermelding

Samuelson, P. A., & Nordhaus, W. D. (2001). Economics (17th ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Samuelson, Paul Anthony, en William D. Nordhaus. Economics. 17th ed. Boston, Mass.: McGraw-Hill, 2001.

MLA (8e ed.) Bronvermelding

Samuelson, Paul Anthony, en William D. Nordhaus. Economics. 17th ed. McGraw-Hill, 2001.