Cahiles, B. A. (1998). MRT line 4 cost upgraded by 40%. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCahiles, Bernie A. "MRT Line 4 Cost Upgraded by 40%." Manila Bulletin 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCahiles, Bernie A. "MRT Line 4 Cost Upgraded by 40%." Manila Bulletin, 1998.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.