Ayatey, S. B. (1979). Essentials of economic analysis. University Press.
Cita Chicago (17th ed.)Ayatey, Siegfried B. Essentials of Economic Analysis. University Press, 1979.
Cita MLA (9th ed.)Ayatey, Siegfried B. Essentials of Economic Analysis. University Press, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.