Levinson, D., & Lawrimore, J. A. State of the climate in 2007.
Cita Chicago Style (17a ed.)Levinson, D.H, y J.H. Arguez Lawrimore. State of the Climate in 2007. Department of Commerce of United States of America.
Cita MLA (9a ed.)Levinson, D.H, y J.H. Arguez Lawrimore. State of the Climate in 2007.
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