APA (7 वां संस्करण) प्रशस्ति पत्र

IBON Foundation & IBON Databank and Research Center. (2000). The State of the Philippine environment (3rd ed.). IBON Books.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

IBON Foundation और IBON Databank and Research Center. The State of the Philippine Environment. 3rd ed. Quezon City: IBON Books, 2000.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

IBON Foundation और IBON Databank and Research Center. The State of the Philippine Environment. 3rd ed. IBON Books, 2000.