Ferguson, C. E., & Kreps, J. M. (1968). Principles of economics. Oxford IBH.
Chicago Edition CitationFerguson, C E., i Juanita M. Kreps. Principles of Economics. Calcutta: Oxford IBH, 1968.
Cita MLAFerguson, C E., i Juanita M. Kreps. Principles of Economics. Oxford IBH, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.