Sobel, R. (1980). The worldly economists. The Free Press.
Cita Chicago (17th ed.)Sobel, Robert. The Worldly Economists. The Free Press, 1980.
Cita MLA (9th ed.)Sobel, Robert. The Worldly Economists. The Free Press, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.