Citação norma APA

Chou, R. (2010). What we still don’t know about treating chronic noncancer pain with opioids. Canadian Medical Association.

Citação norma Chicago

Chou, Roger. What We Still Don’t Know About Treating Chronic Noncancer Pain With Opioids. Canadian Medical Association, 2010.

Citação norma MLA

Chou, Roger. What We Still Don’t Know About Treating Chronic Noncancer Pain With Opioids. Canadian Medical Association, 2010.

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