Valencia, C. Ayala's Boracay unit commissions wastewater treatment facility. The Philippine Star.
芝加哥风格引文Valencia, Czeriza. "Ayala's Boracay Unit Commissions Wastewater Treatment Facility." The Philippine Star .
MLA引文Valencia, Czeriza. "Ayala's Boracay Unit Commissions Wastewater Treatment Facility." The Philippine Star, .
警告：这些引文格式不一定是100％准确.