Reviews ; Periphery (linguistic geography) ; Core/periphery (linguistic geography) ; Three circles model (of world Englishes) ; Center/periphery (linguistic geography) ; English as international medium ; Creole continuum; Dialect continuum; Dialektkontinuum; Kontinuum (Soziolinguistik) ; Continuum (sociolinguistics) ; Soziolektales Kontinuum; Continuum (dialectology) ; Hochsprache; Schriftsprache; Acrolect; Standard language ; English