Vermeulen, R., D.T. Silverman, E. Garshick, J. Vlaanderen, L. Portengen, and K. Kyle Steenland. “Air Pollution and Human Health: Diesel Emissions Not Only a Concern in the Occupational Environment”. Clean Air Journal 24, no. 1 (June 3, 2014): 6. Accessed April 26, 2024. https://cleanairjournal.org.za/article/view/7055.