APA (7th ed.) Citation

IBON Foundation. (2006). The state of the Philippine environment (Third edition.). IBON Books.

Chicago Style (17th ed.) Citation

IBON Foundation. The State of the Philippine Environment. Third edition. Quezon City: IBON Books, 2006.

MLA (9th ed.) Citation

IBON Foundation. The State of the Philippine Environment. Third edition. IBON Books, 2006.

Warning: These citations may not always be 100% accurate.