APA-viite (7. p.)

U.S. Environmental Protection Agency. Inventory of the U.S. greenhouse gas emissions and sinks , 1990-2010.

Chicago-viite (17. p.)

U.S. Environmental Protection Agency. Inventory of the U.S. Greenhouse Gas Emissions and Sinks , 1990-2010.

MLA-viite (9. p.)

U.S. Environmental Protection Agency. Inventory of the U.S. Greenhouse Gas Emissions and Sinks , 1990-2010.

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