Cita APA (7a ed.)

Samuelson, P. A. (1967). ECONOMICS: An introductory analysis (7th edition.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Samuelson, Paul A. ECONOMICS: An Introductory Analysis. 7th edition. New York: McGraw-Hill, 1967.

Cita MLA (8a ed.)

Samuelson, Paul A. ECONOMICS: An Introductory Analysis. 7th edition. McGraw-Hill, 1967.