1017/9781009157940.003. Ritchie, Hannah (2020년 9월 18일). “Sector by sector: where do global greenhousegasemissions come from?”. 《Our World in Data》. 2020년 10월 28일에
concern because CO2 is a greenhousegas EPA 2020; Global Methane Initiative 2020: Estimated Global Anthropogenic Methane Emissionsby Source, 2020: Enteric
Globe Pequot Press. ISBN 0762738359. “Inventory of New York City GreenhouseGasEmissions” (PDF). New York City Office of Long-term Planning and Sustainability