APA (7th ed.) Citation

The greenhouse effect. (article). 7 p. 12+ Feb 17 2007.

Chicago Style (17th ed.) Citation

The Greenhouse Effect. (article). v.99: 7 p. 12+ Feb 17 2007.

MLA (9th ed.) Citation

The Greenhouse Effect. (article). 7 p. 12+ Feb 17 2007.

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