Jefferis, B. J., Thomson, A. G., Lennon, L. T., Feyerabend, C., Doig, M., McMeekin, L., . . . Whincup, P. H. (2009). Changes in environmental tobacco smoke (ETS) exposure over a 20-year period: Cross-sectional and longitudinal analyses. Blackwell Publishing Ltd.

Jefferis, Barbara J., Andrew G. Thomson, Lucy T. Lennon, Colin Feyerabend, Mira Doig, Laura McMeekin, S Goya Wannamethee, Derek G. Cook, και Peter H. Whincup. Changes in Environmental Tobacco Smoke (ETS) Exposure Over a 20-year Period: Cross-sectional and Longitudinal Analyses. Blackwell Publishing Ltd, 2009.

Jefferis, Barbara J., et al. Changes in Environmental Tobacco Smoke (ETS) Exposure Over a 20-year Period: Cross-sectional and Longitudinal Analyses. Blackwell Publishing Ltd, 2009.