APA (7e ed.) Bronvermelding

Samuelson, P. A., & Nordhaus, W. D. (2018). Economics (19th.). McGraw Hill Education India) Private Limited.

Chicago (17e ed.) Bronvermelding

Samuelson, Paul A., en William D. Nordhaus. Economics. 19th. New Delhi: McGraw Hill Education India) Private Limited, 2018.

MLA (9e ed.) Bronvermelding

Samuelson, Paul A., en William D. Nordhaus. Economics. 19th. McGraw Hill Education India) Private Limited, 2018.