APA (7 वां संस्करण) प्रशस्ति पत्र

Roces, A. R. (2007). Environmentalist one of Gusi Prize awardees. IN Roses & Thorns [column]. Philippine Star.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Roces, Alejandro R. "Environmentalist One of Gusi Prize Awardees. IN Roses & Thorns [column]." Philippine Star 2007.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Roces, Alejandro R. "Environmentalist One of Gusi Prize Awardees. IN Roses & Thorns [column]." Philippine Star, 2007.