Cita APA (7a ed.)

Samuelson, P. A. (1948). Economics: An introductory analysis. McGraw-Hill Book.

Cita Chicago Style (17a ed.)

Samuelson, Paul A. Economics: An Introductory Analysis. New York [etc.]: McGraw-Hill Book, 1948.

Cita MLA (9a ed.)

Samuelson, Paul A. Economics: An Introductory Analysis. McGraw-Hill Book, 1948.