de Groot, R. Edward Said and polyphony: Rokus de Groot. Edward Said : a legacy of emancipation and representation.(2010).
Lua i Stíl Chicago (17ú heag.)de Groot, Rokus. "Edward Said and Polyphony: Rokus De Groot." Edward Said : A Legacy of Emancipation and Representation.(2010) .
Lua MLA (8ú heag.)de Groot, Rokus. "Edward Said and Polyphony: Rokus De Groot." Edward Said : A Legacy of Emancipation and Representation.(2010), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.