Quirino, E. The challenge of our times.
Lua i Stíl Chicago (17ú heag.)Quirino, Elpidio. The Challenge of Our Times.
Lua MLA (9ú heag.)Quirino, Elpidio. The Challenge of Our Times.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.