Sibal, J. A century of the Philippine labor movement.
Lua i Stíl Chicago (17ú heag.)Sibal, Jorge. A Century of the Philippine Labor Movement.
Lua MLA (9ú heag.)Sibal, Jorge. A Century of the Philippine Labor Movement.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.