APA (7 वां संस्करण) प्रशस्ति पत्र

Villanueva, M. A. (2001). GMA to workers: Accept COLA as non-wage benefit. Philippine Star.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Villanueva, Marichu A. "GMA to Workers: Accept COLA as Non-wage Benefit." Philippine Star 2001.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Villanueva, Marichu A. "GMA to Workers: Accept COLA as Non-wage Benefit." Philippine Star, 2001.