Comtois, C., & Slack, B. The Geography of Transport Systems: Jean- Paul Rodrigue, Claude Comtois and Brian Slack. c2006.
Cita Chicago (17th ed.)Comtois, Claude, i Brian Slack. The Geography of Transport Systems: Jean- Paul Rodrigue, Claude Comtois and Brian Slack. Routledge: c2006.
Cita MLA (9th ed.)Comtois, Claude, i Brian Slack. The Geography of Transport Systems: Jean- Paul Rodrigue, Claude Comtois and Brian Slack. c2006.
Atenció: Aquestes cites poden no estar 100% correctes.