Sturdy, P., Victor, C., Anderson, H., Bland, J., Butland, B., Harrison, B., . . . Taylor, J. (2002). Psychological, social and health behaviour risk factors for deaths certified as asthma: A national case-control study. BMJ Group.

Sturdy, P., C. Victor, H. Anderson, J. Bland, B. Butland, B. Harrison, C. Peckitt, và J. Taylor. Psychological, Social and Health Behaviour Risk Factors for Deaths Certified As Asthma: A National Case-control Study. BMJ Group, 2002.

Sturdy, P., et al. Psychological, Social and Health Behaviour Risk Factors for Deaths Certified As Asthma: A National Case-control Study. BMJ Group, 2002.