"Gentrification". Dictionary.com. Lees, Slater & Wyly 2010 define gentrification as "the transformation of a working-class or vacant area of the central city to a middle class residential and/or commercial use". Lees, Loretta; Slater, Tom; Wyly, Elvin K., บ.ก. (2010). The Gentrification Reader. London: Routledge. ISBN978-0415548403.