Citação norma APA

Brown, C. A., Crombie, I. K., Smith, W. C., & Tunstall-Pedoe, H. (1991). The impact of quitting smoking on symptoms of chronic bronchitis: Results of the Scottish Heart Health Study.

Citação norma Chicago

Brown, C A., I K. Crombie, W C. Smith, and H. Tunstall-Pedoe. The Impact of Quitting Smoking On Symptoms of Chronic Bronchitis: Results of the Scottish Heart Health Study. 1991.

Citação norma MLA

Brown, C A., I K. Crombie, W C. Smith, and H. Tunstall-Pedoe. The Impact of Quitting Smoking On Symptoms of Chronic Bronchitis: Results of the Scottish Heart Health Study. 1991.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.