APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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