Schwab, K., & Porter, M. E. S. (1999). global competitiveness report 1999. Oxford University.
Chicago Edition CitationSchwab, Klaus, i Michael E. Sachs Porter. Global Competitiveness Report 1999. New Delhi: Oxford University, 1999.
Cita MLASchwab, Klaus, i Michael E. Sachs Porter. Global Competitiveness Report 1999. Oxford University, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.