U.S. Environmental Protection Agency U.S. EPA. Glossary of Climate Change Terms.
Cita Chicago (17th ed.)U.S. Environmental Protection Agency U.S. EPA. Glossary of Climate Change Terms.
Cita MLA (9th ed.)U.S. Environmental Protection Agency U.S. EPA. Glossary of Climate Change Terms.
Atenció: Aquestes cites poden no estar 100% correctes.