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Environmental Protection Agency. Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2020. U.S. Environmental Protection Agency, EPA 430-R-22-003, 2022 https://www.epa.gov/system/files/documents/2022-04/us-ghg-inventory-2022-main-text.pdf.
Environmental Protection Agency. Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2020. U.S. Environmental Protection Agency, EPA 430-R-22-003, 2022 https://www.epa.gov/system/files/documents/2022-04/us-ghg-inventory-2022-main-text.pdf.