Dones, L. (2001). Sto. Tomas is labor secretary. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Dones, Liberty. "Sto. Tomas Is Labor Secretary." Philippine Star 2001.
Lua MLA (9ú heag.)Dones, Liberty. "Sto. Tomas Is Labor Secretary." Philippine Star, 2001.
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