APA (7th ed.) Citation

National Wildlife Federation. (1999). Pollution problems & solutions. Chelsea House Publishers.

Chicago Style (17th ed.) Citation

National Wildlife Federation. Pollution Problems & Solutions. Philadelphia: Chelsea House Publishers, 1999.

MLA (9th ed.) Citation

National Wildlife Federation. Pollution Problems & Solutions. Chelsea House Publishers, 1999.

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