Findlay, Ronald; O'Rourke, Kevin H. (2003). "Commodity Market Integration, 1500–2000"(PDF). In Bordo, Michael D.; Taylor, Alan M.; Williamson, Jeffrey G. (eds.). Globalization in Historical Perspective. University of Chicago Press. pp. 13–64. ISBN0-226-06598-7. Archived(PDF) from the original on 4 October 2018. Retrieved 9 March 2018.
Findlay, Ronald; O'Rourke, Kevin H. (2003). "Commodity Market Integration, 1500–2000"(PDF). In Bordo, Michael D.; Taylor, Alan M.; Williamson, Jeffrey G. (eds.). Globalization in Historical Perspective. University of Chicago Press. pp. 13–64. ISBN0-226-06598-7. Archived(PDF) from the original on 4 October 2018. Retrieved 9 March 2018.