Cita APA (7th ed.)

Samuelson, P. A. (2022). Economics (20th.). McGraw Hill Education.

Cita Chicago (17th ed.)

Samuelson, Paul A. Economics. 20th. Chennai: McGraw Hill Education, 2022.

Cita MLA (9th ed.)

Samuelson, Paul A. Economics. 20th. McGraw Hill Education, 2022.