Não informado. (1992). Test. Spanish Society of Statistics and Operations Research.
Lua i Stíl Chicago (17ú heag.)Não informado. Test. Madrid: Spanish Society of Statistics and Operations Research, 1992.
Lua MLA (8ú heag.)Não informado. Test. Spanish Society of Statistics and Operations Research, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.