Crowley, T. (1991). Proper English?: Readings in language, History and cultural identity. Routledge.
Citazione stile Chigago Style (17a edizione)Crowley, Tony. Proper English?: Readings in Language, History and Cultural Identity. Londres: Routledge, 1991.
Citatione MLA (9a ed.)Crowley, Tony. Proper English?: Readings in Language, History and Cultural Identity. Routledge, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.