Cita APA (7th ed.)

Samuelson, P. A. (2017). Economics (19th.). McGraw Hill.

Cita Chicago (17th ed.)

Samuelson, Paul A. Economics. 19th. New Delhi: McGraw Hill, 2017.

Cita MLA (9th ed.)

Samuelson, Paul A. Economics. 19th. McGraw Hill, 2017.