Frey, William H. (2004), &quot; The fading of city-suburb and metro-nonmetro distinctions in the United States &quot; , in New Forms of Urbanization: Beyond the Urban-Rural Dichotomy, Tony Champion y Graeme Hugo, eds., Aldeshot (Reino Unido), Ashgate.
Frey, William H. (2004), &quot; The fading of city-suburb and metro-nonmetro distinctions in the United States &quot; , in New Forms of Urbanization: Beyond the Urban-Rural Dichotomy, Tony Champion and Graeme Hugo, eds., Aldeshot, United Kingdom, Ashgate.