Citação norma APA

Sidney, S. (2003). Comparing cannabis with tobacco—again: Link between cannabis and mortality is still not established. BMJ Publishing Group Ltd.

Citação norma Chicago

Sidney, Stephen. Comparing Cannabis With Tobacco—again: Link between Cannabis and Mortality Is Still Not Established. BMJ Publishing Group Ltd, 2003.

Citação norma MLA

Sidney, Stephen. Comparing Cannabis With Tobacco—again: Link between Cannabis and Mortality Is Still Not Established. BMJ Publishing Group Ltd, 2003.

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