De Castro, C. (1999). UP Manila brings much-needed eye care service to rural areas. Philippine Star.
Citazione stile Chigago Style (17a edizione)De Castro, Cookie. "UP Manila Brings Much-needed Eye Care Service to Rural Areas." Philippine Star 1999.
Citatione MLA (9a ed.)De Castro, Cookie. "UP Manila Brings Much-needed Eye Care Service to Rural Areas." Philippine Star, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.