APA (7th ed.) Citation

United Nations. (1996). The State of Transboundary Air Pollution: Air Pollution Studies 12. UN.

Chicago Style (17th ed.) Citation

United Nations. The State of Transboundary Air Pollution: Air Pollution Studies 12. Geneva: UN, 1996.

MLA (8th ed.) Citation

United Nations. The State of Transboundary Air Pollution: Air Pollution Studies 12. UN, 1996.

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