Guske, H. (1973). Helder Camara. Union-Verlag.
Lua i Stíl Chicago (17ú heag.)Guske, Hubertus. Helder Camara. Berlin: Union-Verlag, 1973.
Lua MLA (8ú heag.)Guske, Hubertus. Helder Camara. Union-Verlag, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.