Mercurio, R. PNR Clark phase 1 project nearing 50% completion. IN News. The Philippine Star.
芝加哥风格引文Mercurio, Richmond. "PNR Clark Phase 1 Project Nearing 50% Completion. IN News." The Philippine Star .
MLA引文Mercurio, Richmond. "PNR Clark Phase 1 Project Nearing 50% Completion. IN News." The Philippine Star, .
警告：这些引文格式不一定是100％准确.