Mateus, A. (1995). Portugal XXI. Bertrand.
Lua i Stíl Chicago (17ú heag.)Mateus, Augusto. Portugal XXI. Bertrand, 1995.
Lua MLA (8ú heag.)Mateus, Augusto. Portugal XXI. Bertrand, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.