SAMUELSON, P. A. (1970). Readings in economics. McGraw-Hill.
Cita Chicago (17th ed.)SAMUELSON, Paul A. Readings in Economics. New York: McGraw-Hill, 1970.
Cita MLA (9th ed.)SAMUELSON, Paul A. Readings in Economics. McGraw-Hill, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.