Shepherd, W. G. Contestability vs. competition: Once more. Land economics..
Cita Chicago (17th ed.)Shepherd, William G. "Contestability Vs. Competition: Once More." Land Economics. .
Cita MLA (9th ed.)Shepherd, William G. "Contestability Vs. Competition: Once More." Land Economics., .
Atenció: Aquestes cites poden no estar 100% correctes.