1. European Environmental Agency. (2022, April 15). http://www.eea.europa.eu/.
2. GBD Results. (n.d.). Institute for Health Metrics and Evaluation. https://vizhub.healthdata.org/gbd-results/
3. Texas Disposal Systems. (2022, April 15). https://www.texasdisposal.com/blog/land-pollution/.
4. Harvard T.H. Chan, School of Public Health. (2022, March 22). https://www.hsph.harvard.edu/ehep/82-2/#:~:text=Water%20pollution%20is%20the%20contamination,make%20their%20way%20to%20water.
5. National Institute of Environmental Health Science (NIH). (2021). https://www.niehs.nih.gov/.