De Campos, H. Galáxias [exerpts]: Haroldo De Campos. Experimental - visual - concrete : Avant-Garde Poetry since the 1960s.(1996).
Lua i Stíl Chicago (17ú heag.)De Campos, Haroldo. "Galáxias [exerpts]: Haroldo De Campos." Experimental - Visual - Concrete : Avant-Garde Poetry Since the 1960s.(1996) .
Lua MLA (8ú heag.)De Campos, Haroldo. "Galáxias [exerpts]: Haroldo De Campos." Experimental - Visual - Concrete : Avant-Garde Poetry Since the 1960s.(1996), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.