O'Rourke, K. H., Collins, W. J., & Williamson, J. G. Were trade and factor mobility substitutes in history?. William J. Collins, Kevin H. O'Rourke and Jeffrey G. Williamson. Torino, Italia: International Development Centre, 1997.
Chicago Style CitationO'Rourke, Kevin H., William J. Collins, and Jeffrey G. Williamson. Were Trade and Factor Mobility Substitutes in History?. William J. Collins, Kevin H. O'Rourke and Jeffrey G. Williamson. Torino, Italia: International Development Centre, 1997.
MLA CitationO'Rourke, Kevin H., William J. Collins, and Jeffrey G. Williamson. Were Trade and Factor Mobility Substitutes in History?. William J. Collins, Kevin H. O'Rourke and Jeffrey G. Williamson. Torino, Italia: International Development Centre, 1997.