APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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