5City of London,“The Global Financial Centres Index”,March 2007.
6John Friedmann & Wolff G.,“World City Formation:An Agenda for Research and Action”,International Journal of Urban Regional Res earch[J].6,309-344,1982.
7John Friedmann,“The World City Hypothesis,Development and Change”,International Journal of Urban and Regional Researc h[J].Vol.17,1986.
8John Friedmann,《Where We Stand:A Decade of World City Research》[M].Cambridge:Cambridge University Press,1995.
9J.V.Beaverstock,R.G.Smith and P.J.Taylor,“A Roster of World Cities”,Cities[J].16 (6),1999.
10PricewaterhouseCoopers UK,“Largest city economies in the world in 2005 and 2020”,March 2007.