Focas, C. (1998). World cities study of urban transport: A comparison of travel and transport in London, New York, Paris and Tokyo. HMSO.
Lua i Stíl Chicago (17ú heag.)Focas, C. World Cities Study of Urban Transport: A Comparison of Travel and Transport in London, New York, Paris and Tokyo. HMSO, 1998.
Lua MLA (9ú heag.)Focas, C. World Cities Study of Urban Transport: A Comparison of Travel and Transport in London, New York, Paris and Tokyo. HMSO, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.