Valencia, C. Ayala's Boracay unit commissions wastewater treatment facility. The Philippine Star.
Citazione stile Chigago Style (17a edizione)Valencia, Czeriza. "Ayala's Boracay Unit Commissions Wastewater Treatment Facility." The Philippine Star .
Citatione MLA (9a ed.)Valencia, Czeriza. "Ayala's Boracay Unit Commissions Wastewater Treatment Facility." The Philippine Star, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.