Colgan, Siobhan E., Bron Skinner, Caroline Mage, Adam O. Goldstein, Kathryn Kramer, Julea Steiner, and Ann H. Staples. 2008. “Business Policies Affecting Secondhand Smoke Exposure.”
North Carolina Medical Journal 69 (5): 355–61.
https://doi.org/10.18043/ncm.69.5.355.